Pictured: Daniela Ruah (Special Agent Kensi Blye) and Eric Christian Olsen (LAPD Liaison Marty Deeks). The NCIS: LA team discovers that one of their own is compromised when they investigate the murder of a Navy contractor involved in illegal transactions of confidential data. Meanwhile, Hetty is under investigation in Washington, D.C., when the Department of Justice arrives in L.A. to investigate the team, on NCIS: LOS ANGELES, Monday, Oct. 6 (9:59-11:00, ET/PT), on the CBS Television Network Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.