Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Sasha Alexander NCIS Special Agent Caitlin Todd Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor David McCallum Dr. Donald "Ducky" Mallard Actor Brian Dietzen Jimmy Palmer Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star Alan Dale N.C.I.S. Director Tom Morrow Guest Star Rudolf Martin Ari Haswari Guest Star Shane Conrad Navy Lt. Dean Westfall Guest Star Ryan Culver Navy Lt. Curtis Janssen Guest Star Sasha Mazime Virginia State Police Officer Guest Star Benjamin John Parrillo Ari Haswari Guest Star Dennis Cockrum NSA Tech Guest Star Donald P. Bellisario Executive Producer Thomas J. Wright Director John C. Kelley Writer