Created by: Robert Cochran, Joel Surnow
Other cast: Kiefer Sutherland, Kim Raver, Mary Lynn Rajskub, Carlos Bernard
Premiere date: January 15, 2006
Episodes: 5x15, 5x16, 5x17, 5x18, 5x19
Genre: Action, Crime, Drama
Running time: 1h
The fifth season is set 18 months after season four. Former Counter Terrorist Unit agent Jack Bauer begins the season, working as a day-to-day laborer at an oil refinery under the alias "Frank Flynn" in Mojave, California. On a monumental day in Charles Logan's presidency, an anti-terrorism treaty with Russian President Yuri Suvarov is about to be signed when events take a tragic turn.
“Day 5: 9:00 p.m. – 10:00 p.m.” (Episode 15)
Jack is forced to interrogate Audrey when he learns that she might be connected to Bierko and the terrorists. Although he is convinced of her innocence Karen Hayes is unconvinced and decides to push Audrey harder, forcing Jack and Chloe to search for evidence that Stenger is lying. Eventually Stenger admits that implicating Audrey was a ploy to throw CTU off, and informs them of Bierko’s next target. Wayne and Pierce manage to link up and flee from armed men who have orders from Henderson to kill them. Bierko and his men execute the next phase of attacks by targeting a gas company and releasing the Sentox gas throughout Los Angeles. Jack and Curtis lead a TAC team to stop Bierko, but are too late to prevent the Sentox being released. Jack then sets C4 charges on the main gas pipe to destroy the gas before it can reach the main gas tank. Jack captures Bierko just as he is trying to escape.
“Day 5: 10:00 p.m. – 11:00 p.m.” (Episode 16)
Jack teams up with Wayne to help Palmer’s source in the White House: Martha Logan’s aide, Evelyn Martin (Sandrine Holt) whose daughter Amy has been kidnapped by Henderson in order to blackmail her to give up evidence. Gardner has a run-in with Wayne, and Jack suspects Gardner might be behind the day’s events. Jack, with help from Wayne secretly sets up a meet with Henderson to exchange Evelyn’s evidence for her daughter, during which Jack manages to save Amy and kill Henderson’s henchmen but not stop Henderson himself from escaping. Audrey goes along with a plan to remove Buchanan from power in order to keep Chloe at CTU to assist Jack. Jack then learns from Evelyn that it is not Vice President Gardner who is responsible for the day’s events, but President Logan.
“Day 5: 11:00 p.m. – 12:00 a.m.” (Episode 17)
New discoveries regarding the day’s horrific events keep Jack away from CTU as he learns from Evelyn that the evidence against Logan is stored at a bank. He and Wayne kidnap the manager with the help of Chloe as they attempt to retrieve it but Henderson, having tracked down Evelyn Martin, discovers Jack’s location and sends a team to kill him and retrieve the evidence. Jack and Wayne manage to escape, setting off a bank alarm which brings LAPD to the area causing a firefight between Henderson’s men and LAPD. Meanwhile CTU is absorbed by Homeland Security. Chloe and Audrey team together to assist with Jack’s field operations and the investigation takes an unexpected turn.
“Day 5: 12:00 a.m. – 1:00 a.m.” (Episode 18)
Although Logan claims the country is no longer under attack, martial law is still enforced, and CTU remains under intense pressure to find the remaining fugitives. Meanwhile, Jack, Audrey, and Secretary of Defense James Heller (William Devane) reunite for a pivotal meeting. Heller has Jack detained, believing that if Logan’s complicity was made public and prosecuted, it would destroy the integrity of the U.S. presidency. Heller, attempts to force Logan to step down as President, but Henderson locates Jack and manages to recover the recording, which forces Heller to stand down.
“Day 5: 1:00 a.m. – 2:00 a.m.” (Episode 19)
Jack recaptures Henderson, but his men have been shadowing Heller with a helicopter and sniper and threaten to kill him unless released. Heller, chooses to drive his car off the cliff into a lake rather than allow Jack to release Henderson, who is taken into custody. Tensions at the President’s retreat escalate as Martha grows suspicious of her husband. Meanwhile Curtis Manning helps in the struggle against Henderson. A surprising new ally in the form of Karen Hayes joins Buchanan and O’Brian as they continue to assist Jack, who boards a diplomatic flight searching for an associate of Henderson’s, to whom the evidence has been passed on.