Castle and Beckett investigate the murder of a Wall Street trader, but the case takes a shocking turn when the they discover the victim was an undercover informant for the…

While investigating the homicide of an entire family, the team once again finds themselves entangled in an FBI case. They also find themselves distracted by an unusually surly Provenza.

Brenda and the Priority Homicide Team investigate a sniper who is killing gang members in and around MacArthur Park. Offering assistance is an ex-Army colonel who believes the sniper to…