ER, Surrender

Dr Carter struggles with his drug dependency; a custodial strike leaves the ER cluttered with rubbish; a riot at a high-school football game leaves several wounded.

A young couple cope with their baby being premature; Greene and Corday struggle with their relationship.

Benton endures the wrath of Dr Romano; Carter returns to work but with several restrictions.

Frustrated Benton searches for a new position at a different hospital; Abby finds herself attracted to Dr Kovac.

Greene accompanies a heart patient in an emergency helicopter; Benton tries to manage a short-staffed emergency room.

Abby's unpredictable mother (Sally Field) visits; Benton discovers that a gunshot victim is a close relative.

On Thanksgiving Day, Greene gets disturbing news, Corday is sued for malpractice, and Abby tries to send her mother away.

Abby's bipolar mother causes a major ruckus at a downtown store.

Greene accompanies Corday to Manhattan; Carter assists Chen with the birth of her baby.

Greene submits to dangerous, experimental brain surgery in New York.

An injured bishop takes an interest in Dr Kovac.

Weaver regrets not reporting an incident when corrupt owners try to eliminate evidence by torching their sweatshop with the workers trapped inside.

At the last minute, Dr Carter asks Abby to be his date for his grandfather's charity event.

A medical review-board challenges Greene's post-operative competency.

A multicar train accident scrambles the ER and puts Drs. Kovac, Carter and Corday in the field.

Dr Weaver fears her relationship may be exposed when a suicidal woman claims Dr Legaspi sexually harassed her.

Benton witnesses a shooting in the ER; Carter and Abby treat children who became sick on their school bus from toxic fumes.

Obstacles fall in the way of Greene and Corday's efforts to get to their wedding.

Carter accompanies Abby to rescue her mentally imbalanced mother at an Oklahoma motel.

Abby testifies against her mother's sanity at a competency hearing.

Abby's mother has a moment of clarity that gives hope for the future.

Gunshot victims flood the ER when a distraught father goes on a shooting spree in a foster-care facility.