After the body of a teenage boy is found dead in a warehouse, detectives use DNA to connect the boy to a convicted rapist and serial killer, then to the…

Ellenor’s chosen “”sperm donor,”” Michael Hale (Ted McGinley), has second thoughts about the agreement over the rearing of her soon-to-be-born child. Meanwhile, Rebecca emerges from the I.C.U. and gets lost…

Romano forces Benton to choose between the trauma and cardiothoracic fellowships. Carol worries that she may have lost her child. Corday and Greene bond on the way to a medical…

Greene assists paramedics in treating injured children at a school bus accident. En route, Doug and Jeanie survive their own accident. Kerry stops Doug from treating Jeanie…or any other patient….

Doug faces possible criminal charges after Ricky Abbott dies when Ross bypasses system lockouts to enable Joi to give Ricky a lethal dosage of dilaudin. Doug is delegated to desk…

Doug jeopardizes future federal grants for the entire ER when he breaks a double blind study by giving a sample drug to an ailing patient. Doyle lodges a sexual harassment…

Dr. Corday commits a deadly error after being on-call for nearly 36 hours straight. Peter visits Dr. Kotlowitz and receives encouragement regarding a cochlear implant for Reese. Dr. Amanda Lee,…

After Mark saves a 16-year-old assault victim in a daring rescue, he tries to convince the boy to leave the streets for a shelter. Carter loses his beard when two…

Mark goes to a trauma scene with the EMTs, where he treats a gunshot victim who has a bomb strapped to himself. Later, Mark’s daughter persuades him to treat a…

Dr. Corday begins her first day as an intern, first by being assigned to Dale Edson, then being treated as Romano’s lapdog. Kerry is interviewed for ER chief. Doug and…

Dr. Corday’s father visits from overseas in an attempt to convince her to join his medical practice. Weaver suggests that Elizabeth look into alternative methods to stay in America, like…

With the team’s help, Vance faces his demons while uncovering a complex relationship with a killer that puts his whole family in danger.

Jack and Tony clash as the time for the hostage exchange draws near. Keeler meets with Palmer and demands his resignation, while Wayne begins a secret operation against Sherry.

Jack pushes the envelope in an attempt to force Saunders to disclose the location of the missing vials. Sherry meets with David to discuss her terms, while Wayne breaks into…

Chappelle threatens to pull Jack from the investigation for killing a material witness, but Jack persuades him to hold off when they find a fresh lead on Amador’s whereabouts. Amador…

Jack and Chase track Amador in the hopes that he can lead them to the man behind the virus attack. Michelle faces a mob riot when the hotel is quarantined….

Things finally come to an explosive head as Jack, Ramon, Nina and Chase all close in on the virus. But the deal takes an unexpected turn when Amador pulls a…

Jack and Chase interrogate Nina, but the worm turns when she causes havoc with the CTU computer systems. Chappelle puts Chloe under guard when she refuses to answer questions about…

Tony interrogates Nina about Alvers’ location, while Chappelle orders Jack to undergo a medical examination in light of his drug use. Kim and Chase have a conversation about the baby….

Claudia manages to free Chase from his captors, but she pays a high price for her efforts. Wayne turns to Julia, while Palmer calls on Sherry for help against Milliken….

Jack forces Nina to work with him in order to get the virus from Amador. Palmer meets with Sherry and convinces her to help him deal with Milliken. Chase remains…

Jack Bauer heads to the docks for a final climactic showdown with Victor Drazen.

In order to buy himself more time Jack puts Victor and Andre in contact via Mason with a hospitalized Alexis Drazen. Palmer becomes involved with a campaign staffer. Tony and…

Jack is captured by Victor Drazen and Andre when they escape the detention center. Palmer learns he is dominating the California polls. Drazen’s men capture Kim after she is released…

Jack poses as Alexis Drazen and goes to meet a contact who has vital information. However, a CTU agent with a grudge against Jack might risk the success of the…

Jack and Mason search for location of the address found in Victor Drazen’s confidential file. Palmer finally lets the press know about Keith’s past. One of Drazen’s goons closes in…

Jack discovers a top secret detention center houses someone from his past. Tony takes Teri back to CTU as Kim finds herself in jail. Andre Drazen and his soldiers raid…

After handing out photos of all the assassins, Jack and Mason discover that one of Palmer’s campaign staff is in a romantic relationship with Alexis Drazen. Teri and Kim are…

Jack has a final confrontation with Gaines as a CTU chopper heads to the compound. Nina and Tony talk to Jamey’s mother in order to learn why she was helping…

Director Green and Regional Director Ryan Chappelle question Jack about the day’s events. Nina takes Kim and Teri to a safe house after getting them medical attention. Palmer wants a…

Palmer and Jack finally meet for the first time and discuss Operation Nightfall. Nina talks to Teri about her and Jack’s past relationship after they reach the safehouse.

Jack takes Ted Cofell hostage after finding his name on the key-card and tries to get whatever info he has about the conspiracy which only amounts to the name of…

Jack delivers the briefcase to the assassin at Palmer’s press conference. Palmer wants to let the press know what happened with Keith and the murder.

Jack is taken into custody by the Secret Service after he stops the assassination. He quickly escapes in order to check on another name from the key card. Palmer tries…

Jack is on the run after escaping custody and rushes to intercept Ted Cofell before he leaves the city. Nina receives a phone call from Teri and tries to trace…

Jack meets up with Teri at the hospital where they wait to talk to Janet about Kim. However, Janet is killed by Alan who is really working for Ira Gaines….

Jack returns to CTU to switch out the id card with a fake per Gaines’ orders. Palmer tries to convince Keith and Sherry to go public about the murder.

District Director George Mason (Berkely) shuts down CTU forcing Jack to escape in order to follow up on a lead on a conspirator. Nina and Jamie try to cover for…

Jack follows the arrested conspirator to the police station in order to get more info on Kim’s whereabouts. Palmer meets with a reporter who has some damaging information. Kim realizes…

Jack rushes to the aid of CTU Director Richard Walsh who comes into possession of a keycard and ends up in a shootout. Gaines encounters trouble acquiring Martin Belkin’s ID…