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Dark Secrets is the twelfth episode of the fifteenth season of NCIS, and the three hundred forty-second episode overall.
Starring: Mark Harmon (Leroy Jethro Gibbs), Pauley Perrette (Abby Sciuto), Sean Murray (Timothy McGee), Wilmer Valderrama (Special Agent Nicholas "Nick" Torres), Maria Bello (NCIS Special Agent Jacqueline "Jack" Sloane), Emily Wickersham (Eleanor Bishop), Brian Dietzen (Dr. Jimmy Palmer), Duane Henry (MI6 Officer Clayton Reeves) (credit only)
Guest Starring: James Read (Alan Newhall), Gina Hecht (Christine Newhall), Valery Ortiz (Kerry Lyons), Kaitlyn Black (Navy Lieutenant Melissa Newhall / Rita), Brian Hallisay (David Crocker), Patrick Labyorteaux (JAG Navy Captain Bud Roberts, Jr.), Nathan Sutton (Barry Goode)