ER

When Anspaugh decides to retire as chief of staff, he appoints Romano as his replacement. Greene expresses reservations, and Romano makes Weaver the new chief of emergency medicine.

After his mother's funeral, Dr. Greene comforts his father. In Chicago, Romano appoints Corday associate chief of surgery. Corday treats Elaine, Carter's lover, for breast cancer.

Jeanie gets temporary approval as a foster parent for baby Carlos. Reggie and Jeanie get married. Lucy and Kovac talk with a woman whose husband they believe is very dangerous.

Hathaway befriends an out-of-work waitress, Meg (MARTHA PLIMPTON ). Seven months pregnant, Meg cannot afford prenatal care. Hathaway invites her to the hospital, performs free tests and helps her interview for a job in the cafeteria. Lucy notices that Lawrence's memory is failing. A four-year-old girl that Cleo misdiagnosis dies.

A science class prank goes terribly awry, injuring a teacher and several students. Hathaway discovers Meg's drug addiction. Weaver and Greene notice Lawrence gets easily confused.

Benton informs Carla that he is Reese's father no matter what. Jeanie resigns because she wants to stay home and take care of her son. Greene and Weaver use a fake patient to convince Lawrence that he needs help. Lawrence resigns. Hathaway has Meg arrested in an effort to get her off of drugs. Hathaway's co-workers give her a party for the babies. Outstanding Episode

Weaver tries to save the life of a rape victim while Corday struggles with feelings of disdain as she is forced to save the rapist. Cleo treats a teenage alcoholic boy whose alcoholic mother refuses to recognize her problem or his. Lawrence treats his last patient. Weaver offers Kovac a permanent position as Dr. Lawrence's replacement. Hathaway visits Meg and her new baby in the hospital jail.

Complications arise as Hathaway delivers twins. Greene, Hathaway's Lamaze coach, rushes to the hospital to be with her during the delivery.

Kovac and Haleh take care of Hathaway's twins so the new mother can get some rest. The job transfer for Carla's husband does not get approved, allowing Reese to stay in Chicago.

Corday agrees to grant a patient's fatal wish. Kovac befriends two brothers. He tells Weaver that his wife and children died in the Bosnian war.

Lucy's patient finally gets a heart transplant but does not survive. The transplanted heart will now go to another recipient. Greene interferes in a gay domestic situation.

Cleo discovers that a boy has been injecting himself with hormones. Hathaway's obstetrics nurse, Abby Lockhart, joins the ER as a third year medical student on an ER rotation.

Kovac tells two children that their parents did not survive. When Carter is finally available to help Lucy with a possible schizophrenic patient, it's too late.

Weaver finds Carter and Lucy almost dead from stab wounds. The police search for the presumed attacker, whom they later apprehend. Lucy and Carter undergo surgery.

Kovac witnesses an accident and saves the young victim's life. Carter slowly recovers and undergoes excruciating physical therapy. Hathaway helps two sexually active teen girls.

Despite intense pain from his injuries, Carter returns to work and prescribes a controversial procedure. Greene tries to convince his father to undergo cancer treatment.

Chen's patient refuses to reveal to his daughter that she might have inherited a terrible disease. Weaver defies Romano's authority and performs a procedure that gets her suspended.

After Corday refuses to perform exploratory surgery on Cleo's patient, Cleo enlists Benton's help, infuriating Corday. Abby cares for a pregnant woman with five children who wants an abortion. Greene lovingly tends to his dying father at home. Carter sadly discovers that Lucy got accepted as a resident to the psychiatry program at County General. Outstanding Episode

Carter seeks psychiatric help because he can't sleep. He then visits the wife of his attacker. Weaver returns to work after her suspension. Hathaway and Kovac share a kiss.

Weaver reprimands Carter. She also talks to Hathaway about Hathaway's lack of focus. Malucci and Cleo discover a young patient has been sexually molested recently by her father.

Greene prepares to bury his father. Chen worries about Carter's mood swings. After witnessing the interaction between a dying woman and her family, Hathaway realizes she wants her family together and flies to Seattle to join Ross. GEORGE CLOONEY makes a surprise appearance. This is the last episode for series star JULIANNA MARGULIES. Outstanding Episode

After a school shooting, Kovac and Benton care for the gunman and his victims. Abby discovers Carter has been illegally injecting pain relievers. Greene and Weaver confront Carter.