Lewis faces a hectic first day back at County General. Benton and Roger become frantic when they can’t locate Reese. Carter’s grandmother is brought to the emergency room. Carter and…

Abby is distressed when her mother interferes with Eric’s treatment at a psychiatric hospital. Pratt treats a frightened young girl who has been injured in an auto accident and desperately…

On a busy Halloween night, Carter and Abby are the only staffers in costume when victims of an apartment building fire pack the ER. Corday takes on a new med…

Weaver returns to the emergency room after a self-imposed sabbatical of three weeks, wondering how her newfound lesbian identity will affect her workplace relationships. Having purposely allowed a mass murderer…

Carter is overwhelmed by patients from a rock concert riot. Benton’s former girlfriend is killed in a car accident. Newly promoted to chief resident, Chen panics and misdiagnoses a patient….

After another hospital shuts down, the ER is flooded with patients. Dr. Pratt resuscitates a heart-attack victim who had been pronounced dead.

Casualties of a disaster flood the ER, which is short-handed because everyone is at Dr. Carter’s going-away party because he’s leaving the ER after 11 years. Dr. Pratt looks for…

Dr. Carter leads a walk-out of staff protesting lack of security in the ER.

A woman on a hunger strike refuses treatment until the INS give her son another deportation hearing. Abby searches for proof when she suspects a patient is the victim of…

Jules ‘Ruby’ Rubadoux is back in the ER. He’s still angry with Carter about the death of his wife.

Dr. Carter, Abby and other staff of the ER are quarantined as the CDC investigate a mysterious, deadly outbreak.

Carter takes Kem to the hospital to check on their baby since it’s not kicking anymore.

Carter misses his pregnant girlfriend who has returned to Africa. A family of four is rushed to the emergency room after suffering carbon monoxide poisoning from their faulty furnace–forcing the…

Carter sticks up for Neela when the other attendings doubt her future in the ER. Neela caves to the pressure and accidentally gives a patient the wrong medication. Gallant takes…

When a 16-year-old girl who had received a kidney transplant from her father arrives at the emergency room feeling dizzy, Carter traces the problem to a new drug that the…

While examining a young boy, Pratt finds a suspicious gash across his chest and calls Wendall (recurring guest star MäDCHEN AMICK) for a consult. Kovac and Pratt examine a man…

On Thanksgiving Day, a helicopter crash outside the ER leaves several injured, and kills Dr. Romano. Alex tries to bring Sam and Luka together.

Carter returns to County General to hearty welcomes. Although Abby is shocked to learn that Carter’s beautiful African girlfriend, Kem, is already pregnant with Carter’s child, Abby has moved on…

Abby has a dialysis patient in critical condition, but she cannot find his physician, who does not want to be bothered during the holidays.

Confident second-year resident Pratt wants to prove his abilities when he works the graveyard shift (11 p.m. to 7 a.m.), but his heroics sometimes backfire. Pratt shows contempt for a…

Neela is still struggling with her decision not to continue becoming a doctor. We discover that Ray is in a band. Kovac and Sam are amoureux, but where does that…

Ben Hollander is a distraught architect whose degenerating eyesight causes him despondent while a spirited new nurse, Samantha Taggart joins the staff. Elsewhere, disaster strikes when the doctors suspect a…

It’s a busy Fourth of July and Carter is the only attending working.

Chaos reigns in the ER when two prisoners are brought in for treatment, but instead plot a violent escape. Their desperate actions place one doctor in harm’s way, and forces…

Chaos reigns in the ER when two prisoners are brought in for treatment, but instead plot a violent escape. Their desperate actions place one doctor in harm’s way, and forces…

A kidnaped girl is the victim of police shooting. Abby is stuck in the middle of a disagreement between Luka and Clemente. Neela receives a phone call from Iraq. Later,…

A kidnaped girl is the victim of police shooting. Abby is stuck in the middle of a disagreement between Luka and Clemente. Neela receives a phone call from Iraq. Later,…

The ER prepares to take in victims from a plane collision, while Neela and Pratt head out to the crash site where Neela makes heroic efforts. At the end of…

The ER prepares to take in victims from a plane collision, while Neela and Pratt head out to the crash site where Neela makes heroic efforts. At the end of…

Carter faces his last day in the hospital with aplomb, harshly grading Benton on an evaluation report. He later rescinds the report after finding out that the surgical sub-I is…

Deb and Carter compete furiously for procedures after Benton announces their books are due a week earlier than previously announced. Deb commits a nearly deadly error on a patient while…

Susan has her hands full with a pregnant Chloe. Benton goes to dinner with Jeanie. Greene further alienates Swift when he decides to honor a family commitment rather than stay…

Morganstern invites Mark to join the staff as an attending physician. Mark treats an woman with breast cancer, who begs him to kill her. Deb “wows” Benton with her amazing…

Dr. Hicks berates Benton when he tries to switch shifts to attend his mother’s birthday party. A teenage girl, a frequent patient of the ER, is brought in for a…

Peter refuses to sleep, despite Hicks’ order, in the middle of a 48-hour shift. His lack of sleep catches up with him when he is supposed to be watching his…

When the body of a Navy lieutenant is discovered missing an eye, the NCIS investigation leads to the world of cage fighting.

The Strike Team attempts to make bail for Lem who is now in jail, but they discover that Kavanaugh has frozen their accounts. Claudette returns to work to help Dutch…