The ER staff deals with the aftermath of the explosion including a severely injured doctor.

The ER is on guard as Gates gathers the new interns to treat a terrorist, but it's the new doctor and her tough disposition that has everyone on the defensive.

When a gunshot wound victim arrives, the new chief and Abby butt heads on how to treat the patient. Abby comes to Sam's defense when she goes before a nurses disciplinary board.

When a thirteen-year-old gymnast is brought into the hospital after having supposedly fallen off a wall, Dr. Banfield and Dr. Gates must sort out whether abuse is involved.

Patients include an 18-year-old who was stabbed with a fork at his school, and a man shot by a cop at a Halloween party. Meanwhile Sam is annoyed by Gates and Daria.

COURTNEY B. VANCE guest stars in an episode when everybody seems to know best. Both Morris and Neela have authority issues with Dr. Banfield and Gates upsets Sam.

Trying to rescue a three-year-old girl from drowning in a nearby lake, Banfield is reminded of her own experience at County with Dr. Greene (ANTHONY EDWARDS) caring for her son.

A woman who broke her leg while trying to escape a house fire is brought in with her husband. The husband, Mr. Lotery did not let the paramedics to check him over. Then his brother-in-law arrives, saying that he predicted that something like the house fire would happen - it was actually an arson. Mr. Lotery's brother-in-law becomes aggressive and accuses him of being a pervert, specifically a pedophile. Mr. Lotery denies the accusations. He was sued but found not guilty. When Mr. Lotery is waiting for his wife who's in line for X-ray, he has the chance to calm down a young girl who is afraid of needles. When his brother-in-law sees this, he brutally assaults him, while Dr. Brenner calmly watches nearby... Meanwhile, Neela gets sued for malpractice. Written by Toni Tapola, Finland

As a snowstorm hits Chicago, Sam's son Alex crashes a car and ends up in critical condition in the ER. Neela gives a deposition in the malpractice suit against her. Dr. Morris and Dr. Banfield are both at a medical conference in Omaha, and when the snow cancels all flights out they share a memorable and surprising evening. Written by Peter Brandt Nielsen

The Last One Before Christmas Break. The one in which Frank and Drs. Sanchez and Wade accidentally get cake with cannabis in it. The one with the Christmas party. Archie's cousin brings Archie's dead father's storage container to the ER bay. An injured pregnant Latino woman is brought in. There is something wrong with her baby. Plus, the Immigration Office wants to deport her. How's it end? It's Christmas - what do you think? Written by Toni Tapola, Finland

The police wheel in a casualty of a drug deal-turned-shoot-out. They also bring in an injured woman who was the shooter, plus a pair of wounded brothers who were shot by the man who was shot dead. A 13-year old girl with sickle cell disease is brought in because of abdominal pains; Neela takes her case while Tracy learns from her. Banfield's pregnancy test is negative, which leads to a discussion with his husband and a visit to a specialist. Written by Toni Tapola, Finland

Neela's day is filled with three significant events: the arrival in the ER of a man who acts out his dreams, and this time jumped through a window thinking he was escaping a plane; the deterioration of a young girl who has been her patient for a while and with whom she has a special bond, and job interviews, set up by Lucien, who also tells her he wants her to stay at county. But which version of the day is the true one? The one in which both the dream runner and the girl die because decisions turn out to be wrong, the one in which both of them die even though the decisions were right (and in which Neela blows off an interview conducted by ex-ER doc Corday)? Or the one where both patients live and she is offered the job by Corday? Written by Ron Kerrigan [email protected]

A girl who was hit by a car while driving a bicycle is treated in the ER. When her boyfriend turns up it turns out it may not have been an accident. While a lottery has made millionaires of several nearby convenience store workers, Dr. Banfield and her husband are at the fertilization clinic hoping for their one in a million chance. And as an older woman is brought in assisted by her on-and-off husband, three love stories continue in the ER: Dr. Morris meets policewoman Diaz again, Sam discovers that Tony has been seeing Daria, and Neela plays it cool with the returning Dr. Brenner. Written by Peter Brandt Nielsen

A usually eventful day or two at the ER includes admittance of an old man who has flashbacks of the hospital ER as it was 40 years before. His caretaker arrives and turns out to be a former ER staff member. Meanwhile a mother dying of cancer is given some tests after the old man indicates he thinks she has been mis-diagnosed. Sam's sister Kelly visits and tries to get Sam to agree to take on the care of their sick mother. A man who has lived most of his life in an iron lung needs an operation and a poor epileptic woman is brought in after shoplifting. Written by Ron Kerrigan [email protected]

A single mother is hurt in a car accident, and must find someone to take care of her daughter. Gates treats a 78-year-old man who refuses surgery that would save his life. Meanwhile Morris's afternoon date with Claudia is not what he expected. Written by mathew5000

Dr. Carter returns to Chicago and talks Dr. Banfield into allowing him to pick up a number of shifts (without pay). Other happenings include Banfield's dogged pursuit of motherhood, Neela's intensifying personal relationship, and Archie's involvement with a patient who was probably beaten while in police custody - with his new girlfriend the detective standing by. Written by Ron Kerrigan [email protected]

Banfield and her husband look into adoption, while Carter adjusts to a changed ER. Sam's mother (guest star AMY MADIGAN) comes into the ER in an altered state of mind.

As Archie repaints his apartment to please Claudia, she and her partner go on a murder investigation that ends in a double shooting. Carter's renal failure incapacitates him while working on one of the victims of the shooting. Neela breaks off her relationship with Brenner. Sam's mother recognizes her and they resume their old battles. Written by Ron Kerrigan [email protected]

A girl drops off a sick baby at the ER and then leaves; Carter may get a kidney transplant; Gates and Daria care for an elderly woman with multiple sclerosis; Neela and Sam are in Seattle to transport a heart for Joanie Moore, while Doug and Carol are concerned that the donor's grandmother might not consent. Written by mathew5000

On her last day, as she stands before the wall with ex-ER staff's name tags on it, Neela thinks back to when she first began at County and how she progressed. The gang throws her a party, and Frank tries to make up for years of racial stereotypical jokes at her expense. As she waits at the airport, Simon shows up to clear the air between them and thank her for helping him make the first step toward facing his past. Meanwhile Archie realizes Claudia's job is no more dangerous than his. Written by Ron Kerrigan [email protected]

The ER doctors and nurses help out at Camp Del Corazon, a camp for kids who have had open-heart surgery, working alongside the camp counselor (guest star TOM ARNOLD).

As Carter prepares to open a new facility for the underprivileged, some old friends/colleagues gather. Rachel Greene, Mark Greene's daughter, applies for an internship at County.