Nick Warnock

House is recruited by the CIA to help diagnose a deathly ill agent with an unknown illness. The agent’s medical case is being spearheaded by Dr. Samira Terzi (guest star Michael Michele), who offers up very little information about the agent’s history or previous assignments. With limited information to go on, House uses some unorthodox methods to try to crack the code and determine a diagnosis in time to save his mystery patient’s life. Meanwhile, Foreman faces resistance from the remaining six fellowship candidates when they question his judgment and argue over the diagnosis of a female drag car racer who passed out after a race.

After a series of murders in Lower Canaan, Ohio, is connected to a serial killer who had been executed a year ago, the BAU must find the link to the current crimes.

In the second hour, they investigate another murder when a father and son find a frozen body in a pond while ice-fishing.

Patrick Jane accepts the help of a local astrologer, Ellis Mars (guest star John Billingsley - Star Trek: Enterprise), to solve the puzzling case of a triple homicide that involves two policemen and the fiancé of an EMT worker. Heather Tom (The Bold and the Beautiful) also guest stars as Marva, a witness in this episode written by show creator Bruno Heller and directed by series star Simon Baker.

When the wife and 9-year-old blind daughter of a Navy captain are kidnapped, Gibbs and his team are faced with a unique challenge.