ER

An out-of-control truck causes massive injuries; Greene and Weaver scheme to prevent Dr. Romano from becoming chief of staff.

Greene and Weaver clash over the treatment of a critically ill teenager; Carter stumbles into a turf battle with paramedics at the scene of an accident.

The hiring of another attending physician, considered a legend in emergency medicine, is a threat to Greene's ego.

Cleo diagnoses food poisoning in a bratty girl, then is shocked when more severe symptoms begin to surface.

An explosion in a high-school science class floods the emergency room with patients.

Hathaway tries to help a pregnant woman who refuses to change an unhealthy lifestyle.

Corday works to save the life of a rapist while Weaver and Kovac administer to his victim.

Nurse Hathaway goes into labor while on the subway; Greene entertains family at Thanksgiving dinner.

On Christmas Eve, Lucy tries to help a woman in desperate need of a heart transplant.

Jing-Mei Chen treats a runaway teenager who bitterly keeps her identity secret.

A water shutoff causes complications in the ER; Lucy fights to get a patient a new heart; Nurse Hathaway experiences postpartum depression.

New medical student Abby has a tough first day in the ER; a flu epidemic sweeps through the ER; Dr. Romano suddenly becomes ill during surgery.

Dr. Corday's domineering mother visits; Lucy cares for a law student who may be schizophrenic; rivalry between Chen and Malucci hurts patients.

On St. Valentine's Day, the emergency-room staff works to save two patients; police search for missing patient in the hospital.

Dr. Kovac works to save the life of a girl injured in a hit-and-run accident; a 14-year-old girl has cervical cancer.

Dr. Carter returns to the ER on crutches; Dr. Greene tries to take charge of a chaotic shift; Abby makes a mistake that could cost a patient's life.

Dr. Kovac agonizes over decisions affecting patients with kidney failure.

Benton's current love interest, Dr. Finch, asks him to overrule Corday for surgery on a young boy; Abby advises an exhausted pregnant woman to have an abortion.

A family feud threatens a girl's chance for getting a bone-marrow transplant; Greene admits his father, who has pneumonia.

Greene shares final memories with his father; Hathaway receives flowers from a secret admirer; a 6-year-old car-accident victim says her father sexually abuses her.

Dr. Weaver encounters sloppiness, incorrect diagnoses and improper procedures among the ER staff.

Kovac and Benton clash over prioritizing care for a victim of a school shooting vs. a more seriously wounded gunman.