Jack is nearly delirious from lack of sleep and struggles to overcome the haunting events that brought him to Australia and, subsequently, to the island. Meanwhile, Boone gets caught in…

Survivors wonder why Charlie and Claire have been abducted – and by whom – and a search party ventures into the treacherous jungle to look for the pair. Suspicions focus…

The case of a cyber killer, who appears to be targeting medical healthcare workers, turns personal when the suspect invokes the name of Mac’s father who had died nearly two…

Three volleyball players mysteriously drop dead on the court while Calleigh’s testimony against Delko threatens his future as a CSI.

Jack and Sherry Palmer prepare for a dangerous meeting with the head of the war conspiracy at the L.A. Coliseum; David Palmer sits in as the Cabinet waits for confirmation…

Jack and Kate try to break Marie’s resolve so they can learn the location of the bomb. Palmer confronts his ex wife with the information that Stanton gave them. George…

George pits Bob against Reza in hopes of learning which one is working with Second Wave. Sherry and Lynne clash over Palmer’s speech to the press. Kate is interrogated by…

Kate helps Jack to locate and identify Syed Ali. Palmer places Stanton under arrest, but he won’t break. Palmer realizes he must go to extremes to make Stanton talk. Kim…

Jack engages in a brutal contest of wills with Syed Ali. George questions Bob Warner to learn more about Marie’s motivations for helping the terrorists. Kim is rescued by a…

George refuses to allow Jack to assist in Nina’s interrogation. Jack resorts to blackmail to change George’s mind. Palmer and Stanton meet with a Middle Eastern ambassador who may be…

Jack begins his interrogation of Nina and pushes all boundaries in order to force her to divulge the name of her contact. Palmer is surprised and suspicious when his ex…

Jack forces Nina to help with a sting operation against her contact in the hopes that he can lead them to the bomb. Palmer and Mike try to gage Stanton’s…

Kim and Miguel are arrested and the police plan to take them back to LA. Tony questions Bob Warner at CTU and learns more about his government connections. Palmer discovers…

It’s been a year since Jack lost his wife, and the emotional toll includes estrangement from his daughter Kim, who is now a live-in au pair for a troubled family….

Jack tries to undermine Eddie’s mission to bomb CTU while George investigates intel leading him to the site of the nuclear bomb’s construction and Kim tries to make contact with…

George returns to CTU where he orders the medics to revive a badly injured Paula, who has vital information. Palmer comes down hard on Eric for his deception. Kim takes…

Justin suddenly takes a much more keen interest in Holly’s recovery after a nurse (guest starring Odette Yustman as Annie) at the hospital catches his eye; Nora’s fellow radio host,…

The charms and well intended matchmaking antics of Luc’s visiting mother, Gabriela, quickly turn to high drama as she sticks her nose in Nora’s romantic affairs.

Both Kitty and Nora very reluctantly make new romantic connections in unexpected places, Kevin’s nerves about the adoption drive him to a disastrous bout of overindulgence, and Sarah’s plans to…

The relationship between Justin and Annie gets more serious as he brings her to a family dinner. Nora has doubts about him being ready for a serious relationship since he…

A scandal like no other hits the Walker family which causes Kitty to over-think her future.

Fontana and Green arrest a fellow student after a young man is murdered, but McCoy faces a tough adversary when he tries to prosecute the crime.