Should Doctor Greene accept a lucrative job in a private practice or remain in the ER? And Carol Hathaway is in a very dark place.
Food poisoning victims inundate the emergency room, Lewis and Cvetic argue about a senile man, a family is harmed by a drink driver and Ross works up the courage to visit Carol Hathaway
A mysterious woman wanders the halls of the hospital singing, while Lewis is confronted by a private physician concerning her risky treatment of a heart patient, and Hathaway returns to work
Carter contacts the wrong parents to inform them that their son is dead. Ross is still romantically attracted to Hathaway - but she has just moved in with John Taglieri.
Greene's wife announces that she has a job in Wisconsin, Carter thinks he may have caught something from Liz, and Ross helps the asthmatic daughter of a penniless woman
Closed ERs at other hospitals make the ER extremely busy. Greene and Ross treat a girl with heart problems. Meanwhile, Benton tries to save a young shooting victim.
Benton and Langworthy compete for a fellowship, while Ross and Hathaway's attraction escalates, and Lewis's sister disrupts her romantic plans with Cvetic
Ross substitutes as chief resident when Greene calls in sick to stay home to make love to Jennifer, while Lewis tries to find a reason for Cvetic's recent bad temper
Lewis worries about Cvetic's dangerous depression, while Hathaway faces a dilemma about whether she should betray a patient's confidential confession
The first major snowstorm of the season hits Chicago and suddenly the ER is filled with victims of a 32-car accident on the expressway
It's Christmas Eve and Greene still has no gifts for his family, Madame X is singing her songs and Carter has to save a sick Santa
Lewis alienates cardiologist Kayson when she releases a patient who later dies of a heart attack, while Carter struggles through his first surgery
Lewis's troubles increase when Kayson formally accuses her of negligence, and Benton has to leave surgery to help search for his mother
Ross feels powerless to help a young cancer victim, Carter is jealous of Deb, and Lewis is cleared of negligence
Morgenstern surprises Greene with a new job offer. A terminally ill breast cancer patient asks Greene to help her to die. Ross fancies a new staff member who dislikes him.
Kayson, who is married, tries to start a romance with Lewis while Ross and Hathaway cope with a young Russian girl who's been abandoned by her adoptive mother
Benton is torn between family and work responsibilities when he attempts to change shifts, and Greene's marital problems go from bad to worse
Benton's lack of sleep leads to dire consequences for his mother, Greene's wife starts to question their marriage, and Lewis is fascinated by a doctor she meets
A pregnant woman checks into the ER eight weeks prior to her due date, her health problems escalate and the team race to try and save her and her baby
Greene, who's still depressed, makes a terrible impression on the new head of the ER. Ross goes out on a date.
Greene and Swift have a confrontation over the pregnant woman who died in Greene's care, while Benton commits his mother to a nursing home
Ross becomes more involved with Diane and her son, and Carter impresses Dr Swift. Helpless in the face of his mother's issues, Benton tries to cure every patient.
Greene tries to reconcile with his wife. Meanwhile Chloe behaves irresponsibly, upsetting Lewis, and Ross has to perform an embarrassing test on school girls.
Lewis delivers her sister's baby, and Ross sees an old lover again, jeopardising his relationship with Diane. This episode was directed by Quentin Tarantino.
Greene is sued for malpractice, Carter prepares for his last day in the ER, and the group gathers for Hathaway and Taglieri's wedding