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Season Nine

1. Chaos Theory
   Resuming from last year's season finale, the hospital remains in lockdown while the Center for Disease Control probes a mysterious and deadly illness that leaves Dr. Carter (Noah Wyle), Abby (Maura Tierney) and others quarantined. While Dr. Lewis (Sherry Stringfield) initially is left alone and fights to save one patient, Carter and Abby grow resolved to their romantic fate over the next several days as they idle away their time inside the hospital with Drs. Chen (Ming- Na) and Pratt (Mekhi Phifer) -- and veteran patient Stan the Can (guest star Harrison Page). Meanwhile, newly widowed Dr. Corday (Alex Kingston) struggles to adapt to her new medical practice in her native England while over-shadowed by her attentive parents (guest stars Paul Freeman and Judy Parfitt). Laura Innes, Goran Visnjic, Paul McCrane and Sharif Atkins also star
    
2. Dead Again
   Chaos reigns as the ER is overloaded with patients after another hospital is shut down just as Dr. Corday (Alex Kingston) makes an emotional return -- and the aggressive Dr. Pratt (Mekhi Phifer) enrages his counterparts when he resuscitates a heart attack victim who had been pronounced dead. As the tight-lipped Corday sees the ER for the first time since Dr. Greene's death, she clashes with the tightly wound Dr. Weaver (Laura Innes). Meanwhile, Dr. Carter (Noah Wyle) and a frisky Abby (Maura Tierney) hardly care to conceal their growing romantic attraction to each other; Dr. Gallant (Sharif Atkins) gets an eye- opening education when he pulls a shift in the psychiatric unit; Dr. Romano (Paul McCrane) faces a daunting new challenge. Goran Visnjic, Ming-Na and Sherry Stringfield also star.
    
3. Insurrection
   After an enraged drug addict pulls a gun on Dr. Chen (Ming-Na) and other staff members, a fed-up Dr. Carter (Noah Wyle) leads a divisive walkout when his request for metal detectors is delayed -- thereby endangering the lives of new patients. Elsewhere, Dr. Lewis (Sherry Stringfield) counsels an exhausted elderly woman (guest star Shirley Knight) whose adult son is dying from Huntington's disease -- the same affliction that killed her husband. In addition, Dr. Pratt (Mekhi Phifer) tries to safeguard his developmentally disabled brother (guest star Marcello Thedford) and comforts Chen after her brush with death; Dr. Kovac (Goran Visnjic) treats an HIV-infected boy whose parents arouse his curiosity; and Abby's (Maura Tierney) brother (guest star Thomas Everett Scott) gets an eyeful when he visits the hospital. Laura Innes, Paul McCrane and Sharif Atkins also star
    
4. Walk Like A Man
    Young Dr. Gallant (Sharif Atkins) gets worked up over the callous treatment afforded to an addled elderly patient (guest star Diane Delano) under his repeated care and confronts Dr. Pratt (Mekhi Phifer) when he reports a suicidal Army Ranger (guest star David Barrera) -- whom Gallant promised to protect. Likewise, a protective Dr. Carter (Noah Wyle) is agitated when he discovers that girlfriend Abby (Maura Tierney) downed alcohol while out with her girlfriends. Elsewhere: Dr. Weaver (Laura Innes) just isn't herself as she makes repeated -- and embarrassing -- mistakes; Dr. Kovac (Goran Visnjic) dallies with the mother of a little girl (guest star Alexandra Kyle) facing kidney failure; and Dr. Corday (Alex Kingston) treats the wife of a senior citizen (guest star Willis Burks II) who's suffering from Alzheimer's. Paul McCrane, Ming-Na and Sherry Stingfield also star.
    
5. A Hopeless Wound
   A suspicious fire on Halloween floods the E.R. with many bizarrely costumed victims -- frustrating Dr. Pratt (Mekhi Phifer) -- while a frustrated Dr. Romano (Paul McCrane) lets his recent traumatic injury interfere with good judgment when he directs Dr. Corday (Alex Kingston) during surgery on a man with a flesh-eating infection. Elsewhere, Nurse Marquez (Laura Ceron) threatens to file a grievance against Dr. Kovac (Goran Visnjic), who must also treat an older mother (guest star Ashley Gardner) who won't accept that her newborn baby cannot survive while Abby (Maura Tierney) and Dr. Carter (Noah Wyle) playfully dress up in suggestive seasonal costumes. In addition, the staff greets an older but wiser surgical intern (guest star Don Cheadle) who tries to overcome a daunting physical handicap.
    
6. One Can Only Hope
   Dr. Corday (Alex Kingston) clashes with the new surgical resident (guest star Don Cheadle, "Ocean's Eleven") over his intervention in the treatment of a sickly young woman (guest star Nora Zimmett) who signs a "Do Not Resuscitate" agreement while Abby (Maura Tierney) wonders aloud about the erratic behavior of her visiting brother (guest star Thomas Everett Scott). Elsewhere, Abby feels torn when she is caught between an official nurse's complaints against Dr. Kovac (Goran Visnjic), her former lover. In addition, Dr. Pratt (Mekhi Phifer) comforts Dr. Chen (Ming-Na) after she feels threatened by a patient and Corday suspects that an unconscious, 14-year old female patient has been sexually assaulted.
    
7. Tell Me Where It Hurts
   While Abby (Maura Tierney) fears the worst when her AWOL brother (guest star Thomas Everett Scott) suddenly disappears, Drs. Carter (Noah Wyle) and Chen (Ming-Na) treat a frightened Chinese immigrant nanny (guest star Michelle Krusiec) whom they suspect was impregnated by her employer. Elsewhere, a new resident (guest star Don Cheadle) struggling to overcome his physical disability, tries to help in the E.R. -- but his advice to patients is unappreciated by his fellow doctors. In addition, Dr. Kovac (Goran Visnjic) cannot seem to quench his sexual appetites but his admirable resolve on the job to find an eye specialist to treat a young gunshot victim gets him into more trouble; Drs. Gallant (Sharif Atkins) and Harkins (guest star Leslie Bibb, "Popular") engage in an escalating game of one-upsmanship concerning their medical knowledge; Dr. Weaver (Laura Innes) gets some much-needed good news.
    
8. First Snowfall
   Abby's (Maura Tierney) family nightmare continues when she and her mother (Oscar-winning guest star Sally Field, "Norma Rae") go in search of her AWOL brother (Thomas Everett Scott) -- whom she suspects is suffering from serious mental problems -- and the two women meet at a Midwestern air force base in hopes of preventing his military court-martial. Back at the snowed-in hospital, Dr. Carter (Noah Wyle) struggles to get out of Chicago to join Abby while Dr. Corday (Alex Kingston) treats a family of patients who are severely struck by a truck driver while building a snowman. Meanwhile, Corday tries to help the father (guest star Jeff Kober) make a life-or-death decision while she sympathizes with the troubled Dr. Nathan (guest star Don Cheadle) as he struggles with his increasing symptoms of his physical handicap.
    
9. Next of Kin
   Abby (Maura Tierney) is heartbroken when her troubled mother (Oscar-winning guest star Sally Field, "Norma Rae") interferes with the treatment of her bi-polar brother (guest star Thomas Everett Scott, "Philly") at a psychiatric hospital while Dr. Pratt (Mekhi Phifer) treats a frightened young girl (as Morgan, guest star TBA) who is injured in an auto accident and tries to hides a terrible secret. Elsewhere: a dissolute Dr. Kovac (Goran Visnjic) forms an unlikely bond with a lonely elderly woman (as Matilda, guest star TBA) who offers him a tidy "tip"; Dr. Chen (Ming-Na) is flooded with teary memories when a baby is abandoned inside the E.R.; and Pratt takes matters into his own hands when his luckless brother Leon (guest star Marcello Thedford) is fired from his menial job.
    
10. Hindsight
    In a form-breaking episode, events just before Christmas are traced in reverse chronological order as a hungover Dr. Kovac's (Goran Visnjic) troubled life lurches closer to tragedy when his car accidentally hits another auto on icy roads -- endangering his passenger, young resident Harkins (guest star Leslie Bibb, "Popular"). While on duty, Kovac struggles to help a sickly young man (guest star Michael Ealy, "Barbershop") fight for his life. In addition, Abby (Maura Tierney) and the emergency room staff attend to a pair of belligerent elves and a young female hockey player (guest star Brittney Lee Harvey) with a head wound.
     
11. A Little Help from My Friends
    When Dr. Pratt (Mekhi Phifer) is caught bringing a gun into the emergency room, Dr. Carter (Noah Wyle) feels compelled to defend him -- but his colleague's erratic behavior makes even Carter have second thoughts. Meanwhile Dr. Weaver (Laura Innes) hopes to keep her pregnancy a secret, but physical complications might compromise her plans. Elsewhere, Dr. Lewis (Sherry Stringfield) keeps a wary eye on a self-destructive patient (guest star Rob Moore) who admits to molesting young boys; a guilt-stricken Dr. Kovac (Goran Visnjic) is warned by Dr. Romano (Paul McCrane) not to admit his fault to the grieving relative of a patient he treated; Dr. Chen (Ming-Na) treats some student math whizzes who overdosed on Ritalin; and Dr. Gallant (Sharif Atkins) confronts a scheming young wife (guest star Sofia Milos) who has designs for her dying husband.
     
12. A Saint in the City
    Dr. Weaver (Laura Innes) is caught in a bind when an influential alderman (guest star Bruce Weitz), seeking treatment after a fall, tests positive for syphilis -- information that will likely become public. Meanwhile, Dr. Carter (Noah Wyle) is impressed when he meets an irascible old doctor (Emmy Award-winning guest star Ed Asner) who runs an inner-city medical clinic. Elsewhere: a sympathetic Dr. Kovac (Goran Visnjic) bends ethics when he tricks an injured patient (guest star James Colby) into believing that his terminal wife has already expired; Dr. Pratt (Mekhi Phifer) decides on his own to invite a dying mother's (guest star Jeannetta Arnette) drug-addled son to her bedside and also keeps a wary eye on his mentally challenged brother Leon (guest star Marcello Thedford) as he starts a new job; Weaver and Kovac differ on what to do with a young boy whose repeated medical history suggests paternal child abuse.
     
13. No Good Deed Goes Unpunished
     The protective Dr. Pratt (Mekhi Phifer) is overwhelmed when his mentally challenged roommate Leon (guest star Marcello Thedford) leads him to treat a gravely wounded suspect who was responsible for a robbery and holdup -- which also involved the easily duped Leon -- while Dr. Carter (Noah Wyle) stuns Abby (Maura Tierney) when he decides to go to Africa where the medical needs are greatest. Elsewhere, Carter attends to the sickly Dr. McNulty (Emmy Award-winning guest star Ed Asner, "Lou Grant"), the curmudgeon he recently met who runs a storefront medical clinic; the emotionally fragile Dr. Romano (Paul McCrane) teeters on the brink of disaster and receives negative news regarding his recovery; Dr. Kovac (Goran Visnjic) intends to carry out a threat made to Dr. Weaver (Laura Innes), who also re-encounters a grateful alderman (guest star Bruce Weitz, "Hill Street Blues") who returns bearing financial gifts; and a skilled and bold doctor (guest star Bruno Campos) makes a pass at a shocked Dr. Corday (Alex Kingston).
     
14. No Strings Attached
     Abby (Maura Tierney) is distraught when she learns that her mentally troubled brother went missing while flying over the Great Lakes, a desperate Dr. Romano (Paul McCrane) gets some depressing news and the hospital staff is confronted with a group of teenaged girls who are run down by a fellow female student suffering from a rare disease that might have caused the tragedy. Elsewhere, Dr. Chen's (Ming-Na) relationship with Dr. Pratt (Mekhi Phifer) takes a new turn; a daughter wants to take extreme measures to keep her extremely elderly mother alive; Dr. Weaver (Laura Innes) gets a promotion from a grateful alderman (guest star Bruce Weitz, "Hill Street Blues") and Dr. Lewis (Sherry Stringfield) ponders her pending blind date with a hunk.
     
15. A Boy Falling Out Of The Sky (a.k.a. Shifts Happen)
    As Dr. Carter (Noah Wyle) returns from his scuba trip, Abby (Maura Tierney) veers disturbingly close to a breakdown in her attempt to cope with a multitude of problems, Dr. Weaver (Laura Innes) confronts the man who stole her purse and Dr. Pratt (Mekhi Phifer) accompanies paramedics -- and is later surprised by what happens to a comatose homeless man found on the street. As Abby awaits word on her missing flyboy brother and deals with her needy mom (Oscar-winning guest star Sally Field), she and Carter try to keep a brain-dead boy alive in order to comfort his grieving parents. Elsewhere, Dr. Kovac (Goran Visnjic) finally arrives at the hospital in the nick of time to aid an overdosed teen while Dr. Lewis (Sherry Stringfield) helps an elderly man (guest star Eli Wallach, "The Magnificent Seven") whose wife suffers from Alzheimer's and hypothermia. Lewis is also flattered by her teenaged admirer (guest star Patrick Fugit, "Almost Famous") -- which doesn't help sugarcoat the grim news for her young cancer patient.
     
16. A Thousand Cranes
    Drs. Pratt (Mekhi Phifer) and Gallant (Sharif Atkins) see the when they are pulled over and questioned as possible suspects in a murderous rampage at the hospital's local diner while a sympathetic Dr. Lewis (Sherry Stringfield) befriends an enamored teenaged cancer patient (guest star Patrick Fugit, "Almost Famous") who fears he might not have long to live. Elsewhere, Dr. Carter (Noah Wyle) learns a sobering earful from Maggie (Oscar-winning guest star Sally Field) when he reluctantly takes her to the airport even as he ponders a life-changing personal decision. In addition, troubled Dr. Kovac (Goran Visnjic) ruminates on his tragic life when he is forced to consult a psychologist.
     
17. The Advocate
    Dr. Weaver (Laura Innes) finds herself in a deep hole when she bends the rules to treat the syphilitic lover of her powerful new patron -- Alderman Bright (guest star Bruce Weitz, "Hill Street Blues") -- but when the patient has a severe allergic reaction, she desperately tries to cover her tracks and compromises her ethics even further. In the meantime, Weaver's career continues to get a boost at the expense of a stubborn Dr. Romano (Paul McCrane) and Dr. Carter (Noah Wyle) and Abby (Maura Tierney) reassess their relationship. Elsewhere: Dr. Kovac (Goran Visnjic) ruminates aloud on his star-crossed career path while he ministers to a rebellious teenaged girl who claims she was sexually abused at a boot camp for wayward youths, and Carter cares for a nasty middle-aged woman who's slowly being poisoned. Alex Kingston, Ming-Na, Sherry Stringfield and Sharif Atkins also star.
     
18. Finders Keepers
     A tense E.R. spins further into chaos when a bitter Dr. Romano (Paul McCrane) assumes control and offends nearly everyone with his inept and dictatorial policies, while Dr. Lewis (Sherry Stringfield) is pleasantly surprised by the visit of an intimate relative (guest star Donal Logue). Meanwhile, a sympathetic Dr. Kovac (Goran Visnjic) employs Dr. Corday's (Alex Kingston) help in his quest to bring a sickly Croatian boy to America for his only chance to live. Corday also counsels a frightened young pregnant women (guest star Elizabeth Bogush) whose cancer jeopardizes both her life and the baby's. Elsewhere, Corday's nanny accidentally runs over the foot of a cunning street salesman (guest star Max Grodenchik) Dr. Pratt (Mekhi Phifer) scrambles to buy Dr. Chen (Ming-Na) a gift for her birthday; and Lewis is startled at what happens to a woman who fell and is admitted with a broken wrist. Laura Innes, Maura Tierney and Sharif Atkins also star
     
19. Things Change
     Abby (Maura Tierney) is threatened by an over-medicated psychotic patient (guest star Johnny Sneed) and gets an update regarding her missing brother (guest star Thomas Everett Scott). Elsewhere, Dr. Romano (Paul McCrane) continues to make rash judgments -- and enemies -- when he orders a man with a severe sore throat to be released and then tries to perform surgery in the emergency room. Dr. Kovac (Goran Visnjic) welcomes a old friend (guest star Nina Sablich) -- a fellow Croatian doctor -- to observe the chaos of an American inner-city hospital. Carter also receives some emotional news from home as he guides a group of eager medical students who witness him refuse to give up trying to save a cardiac-arrested patient. Laura Innes, Alex Kingston, Ming-Na, Sherry Stringfield, Sharif Atkins and Mekhi Phifer also star.
     
20. Foreign Affairs
    Despite receiving some tragic family news, Dr. Carter (Noah Wyle) tries to prevent a grieving gang member (guest star Cory Hardrict) from seeking vengeance while Dr. Kovac (Goran Visnjic) bends the rules to get a dying Croatian boy to Chicago in a race to save his life. Meanwhile, Carter's sad family gathering is interrupted by Abby's (Maura Tierney) mentally troubled brother Eric (guest star Thomas Everett Scott) who leaves his voluntary care facility to cause trouble. Elsewhere, Dr. Lewis (Sherry Stringfield) just can't seem to break off her relationship to her former "husband" (guest star Donal Logue), a minor league baseball player (guest star Ricky Luna) with a serious heart ailment is treated on the eve of his pitching debut with the Cubs and a tormented Dr. Romano (Paul McCrane) makes a dramatic decision about his mangled arm. Laura Innes, Ming-Na, Sharif Atkins and Mekhi Phifer also star.
     
21. When Night Meets Day
    In the Emmy Award-winning series' 200th episode, a dual storytelling device divides the "day and night" shifts of Drs. Carter (Noah Wyle) and Pratt (Mekhi Phifer). A frustrated Carter nearly has a meltdown when he treats two cult victims from a mass poisoning tied to the day's unnerving solar eclipse as well as a wounded gang-banger, a dying Buddhist nun and a heart-attack victim. On the night scheduled to be his last in the E.R., Pratt treats a woman whose unborn child was cut out of her -- prompting a search for the baby -- plus a burned firefighter and other cult victims. Meanwhile, Dr. Romano (Paul McCrane) experiences life as a patient when he undergoes surgery. Laura Innes, Alex Kingston, Maura Tierney, Goran Visnjic, Ming-Na, Sherry Stringfield and Sharif Atkins also star.
     
22. Kisangani
     In a change-of-pace episode, a sweat-soaked Dr. Carter (Noah Wyle) finally arrives in the war-torn Congo as part of a voluntary medical program and he finds primitive Third-World facilities, a few heroic staffers and woeful patients overflowing the tiny hospital while a bloody civil war threatens to engulf them all. Carter ventures deeper into the jungle to reunite with Dr. Kovac (Goran Visnjic) as they risk their lives manning a crude outpost used for a vaccination campaign -- and soon find themselves in the withering line of fire between the warring tribes.

Season Ten

1. Now What?
   The 10th season opens with County undergoing extensive renovations, Carter out of Africa but in trouble with Abby, and a new med student (Parminder Nagra) coming between Chen and Pratt. Meanwhile, a mother's hidden ailment causes a tragic car accident; and a long-distance phone call leaves the staffers shaken and one doctor heading for the door.
    
2. The Lost
   Before he can even unpack, Carter's back to Africa after hearing grim news about the colleague he left behind. The installment is set in the sweaty, sun-scorched Congo and mirrors May's finale by focusing solely on the ever-maturing Carter. Granted, he's in hot water with dear Abby back in Chicago, but here, he's a mas macho medic, romancing a Red Cross volunteer (Mary McCormack), dodging bullets and leading the hunt for a missing-in-action Kovac. Has County's Croatian cutie run afoul of rebels? And if so, why is Goran Visnjic still in the opening credits?
    
3. Dear Abby
   Abby gets a Dear John letter from Carter that makes the rounds faster than the hyper new resident (Glenn Howerton) whom Neela nearly kills with too much asthma medication. Meanwhile, the nursing crisis reaches a fever pitch; Corday and Dorset dispense with the formalities; and a young heart patient (Stephanie Lineburg) is kept in the dark about her grim prognosis.
    
4. Shifts Happen
   Pratt and Weaver wind up on the wrong side of two judgment calls during a hellacious night shift that also finds Abby seeking funds for a hush-hush personal endeavor. Meanwhile, second-year resident Coop proves his worth after a patient develops a mysterious neurological condition; Corday has a hard time getting used to her newly rejuvenated sex life; and Neela takes care of a young girl who shows up with her unconscious grandmother.
    
5. Out of Africa
   Bob Newhart begins a three-episode role as an ailing architect whose gradual loss of vision touches a nerve in Lewis. Meanwhile, the rest of County is thrown off by a staggering backlog of patients; an alcoholic mother's grisly reaction to losing custody of her children; the arrival of a new nurse (Linda Cardellini); and Abby's career switch.
    
6. The Greater Good
   Susan goes above and beyond the call of duty to help Ben Hollander cope with his failing vision; Pratt's actions backfire for a mother in drastically premature labor; Abby uses her surgical rotation to teach a widow about organ donation; and Kovac battles a social worker over an overmedicated teen.
    
7. Death and Taxes
   Lewis's busy workload threatens to keep her from an important date with Hollander; Kovac and Corday clash over the treatment of a patient with questionable symptoms; and Sam's son spends a day underfoot at the ER. Meanwhile, Chen gets bad news from China about her parents.
    
8. Freefall
   A Thanksgiving tragedy high above the ER has the County staff racing to aid the survivors and Susan fearing the worst about one of the possible casualties. Meanwhile, Abby finally finds a reason to get over Carter, who may be heading back to Chicago sooner than anyone expected.
    
9. Missing
   Pratt takes a shine to Gallant's visiting sister (Joy Bryant); Neela reaches out to a pair of car-crash victims struggling with returning to their strict Amish families; and Susan races to locate the missing parents of a 5-year-old Jane Doe. Meanwhile, Sam bristles at Luka's attention to her young son.
    
10. Makemba
    Flashbacks recall Carter's life — and idealistic new lover (Thandie Newton) — in Africa, as he prepares to return to Chicago for the holidays. Back at home, Pratt continues to avoid Gallant's sister; and Abby refuses to accept a peace offering from her former flame.
     
11. Touch and Go
    Carter is back in Chicago with Kem in tow, who soon meets Abby.  Sam gets called to Alex's school where he was suturing his own cut. Meanwhile Pratt accidentally breaks a patient's neck while doing an unsupervised intubation, and Luka informs Carrie that he's going back to Congo, but later changes his mind.
     
12. NICU
    Neela and Abby face their toughest rotation ever after being assigned to the Neo-natal Intensive Care Unit, where a familiar face from the ER ends up needing help in the worst way.
     
13. Get Carter
    Carter's girlfriend steps on more than a few toes while spending a day observing County in action. Meanwhile, Kerry slaps Romano's name on a wing that would have him kicking and screaming; Sam gets more info on Kovac than she hoped for; Pratt's recent mistakes have a paralyzing effect on his ability to treat patients; and Lewis turns down a promotion, due to an imminent change in her lifestyle.
     
14. Impulse Control
    Kerry tries to protect a mom from losing her son after a car wreck that has Abby rushing to find his sister at another ER and the driver reeling from his role in the tragedy. Meanwhile, Pratt pulls a fast one on a TB carrier who refuses treatment; Carter and Kem share her last day in Chicago mapping out their future; Sam's violent side is triggered by a patient's abusive beau; and Luka receives a sexy late-night visit from a colleague.
     
15. Blood Relations
    Neela's faced with crippling claustrophobia while trapped in a hyperbaric chamber with a baby suffering from carbon-monoxide poisoning. Meanwhile, Chen returns from China with her ailing father; Kerry breaks bad news to a mother about her son's leukemia; and Sam ponders the repercussions of her night with Kovac.
     
16. Forgive & Forget
    Sam's troubled by Kovac's visiting African tryst; one of County's former patients uses a tank to exact a revenge that threatens half of Chicago; Corday is charmed by a fellow surgeon; a staffer becomes a patient after suffering a heart attack.
     
17. The Student
    Carter's efforts to push Neela trigger a crisis that threatens not only a head injury, but also a fellow doc. Meanwhile, it's Chuck to the rescue after a sexually deranged patient targets Susan; and Chen scrambles to find an appropriate caregiver for her ailing father.
     
18. Where There's Smoke
    A warehouse blaze brings a flood of wounded firefighters into the ER, including a case that hits all-too-close to home for Kerry and Corday; Gallant proves worth his name by taking the fall for Neela's bad call that killed a patient; Lewis is forced to face the facts about her troubled pregnancy; a familiar - but unfriendly - face from Sam's past resurfaces; and County loses one of their own to the ongoing strife in Iraq.
     
19. Just a Touch
    A breast exam lands Pratt in hot water; Weaver scores a minor win in the fight for her son; Sam is baffled by her ex's (Cole Hauser) return - and Kovac's take on the new man in Alex's life; Abby proves her mettle during a psych rotation; and Corday scrambles to keep two of her new romances from running into each other.
     
20. Abby Normal
    Kerry considers drastic action to keep Lopez's folks from taking custody of Henry; Abby resorts to unconventional measures with a mom suffering from psych-related seizures; Pratt lays into Neela for avoiding the ER to work in a lab, where her skills come in handy after a colleague toys with a bad medicine; and Carter impresses Kem - but annoys his father - with a shake-up at his family's foundation.
     
21. Midnight
    Rachel Greene pays Corday a surprising visit; graduation - and potentially grave news - looms for Neela and Abby; John and Kem face a major obstacle on the road to a happy family life; Sam's ex makes his intentions clear to Luka.
     
22. Drive
    In the 10th season finale, Abby reminds a dying teacher (Bill Macy) that his was a life well-lived; a car wreck brings out Kovac's inner hero; Sam flees with Alex after Steve settles down in Chicago; Kerry has her day in court - and faces Sandy's family - over Henry; Neela heads to Michigan for her internship; mystery swirls around Chen's recent injuries; and Pratt's attempt to buddy up with a patient leaves three lives in jeopardy
     

ER Episode Synopsis Are Courtesy Of NBC & TV Guide