While helping her classmate Mandy search for her missing Jack Russell terrier, Veronica stumbles onto a bigger mystery, which affects pets all over Neptune. Meanwhile, tensions mount in the Echolls…

When a bomb explodes at a protest rally killing five people, Castle and Beckett realize the key to solving the case is to reconstruct the 47 seconds prior to the…

While the whole staff is worried the ER might close, Jeanie has her own problems in dealing with being HIV-positive.

Grissom is called to a murder of a 17-year-old in a casino penthouse. Sophia Curtis (Louise Lombard) joins him in his research, she normally works in the day-shift. The entire…

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…

Counter Terrorist Unit agent Jack Bauer is assigned to protect presidential candidate David Palmer from a potential assassination attempt. Unfortunately, his daughter has disappeared and someone within CTU may be…

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…

As Kim and Janet temporarily escape their captors, Senator Palmer learns that his son may have been involved in the death of his daughter’s rapist 7 years ago. Gaines finally…

Chicago, Illinois – Miss Parker finds that she just missed Jarod posing as a High School biology teacher, and is then subjected to the flu virus. Jarod now poses as…

In this Meredith & Cristina-centric episode, the two friends continue to cope with life after the plane crash and their ever-growing responsibilities at their respective hospitals. As Meredith juggles taking…

The shooting of a board member of an exclusive private school leads to a blue-collar family and a classist system.