A navy commander's murder is investigated, and in the process, the team runs into E.J. Barrett.
A former NCIS investigative assistant is found stabbed to death, and her murder is linked to a plot to rob a warehouse full of valuable possessions; and a new agent (Sarah Jane Morris) joins the team.
A seaman's murder leads to a serial killer operating in international ports, and Gibbs reluctantly must allow agent E.J. Barrett lead the investigation; and the team finally meets Ziva's boyfriend.
The search for the Port-to-Port killer heats up because his latest victim has ties with NCIS.
In the eighth-season finale, the team members are in grave danger when they finally confront the Port-to-Port killer.
A navy officer is murdered and the team searches for the killer, a petty officer caught in the crime on a Pentagon security camera.
In the ninth-season opener, Tony's secret assignment for the SECNAV leads to an NCIS agent's death and leaves Tony and Gibbs to solve the mystery of how the tragedy occurred.
Castle and Beckett search for a murderer whose victims are dressed like fairy-tale characters such as Red Riding Hood and Snow White.
The BAU investigates ritualistic murders in Utah. The probe reveals the killer may have a fascination with the Salem witch trials. Meanwhile, Garcia prepares for a Day of the Dead celebration.
Download the TV Guide app for iPhone, iPad and Android!