"Gibbs and the team are called in when a Pentagon cryptographer suspected of spying apparently commits suicide. With their prime suspect dead, the NCIS team must uncover whether or not she was the Pentagon's mole."

"After discovering that a grisly murder scene was staged, the team realizes that Abby was the intended target when some key evidence contaminates her lab and almost kills her."

"Ziva is in shock when a routine tactic she uses to subdue a suspect might be the cause of his sudden death. As Ducky and Abby work to clear Ziva's name, Gibbs learns that Director Shepard has been kidnapped by their dead suspect’s brother."