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 David McCallum Dr. Donald "Ducky" Mallard Actor Tom McCleister Mr. Green Guest Star Josh Holloway Sheriff Guest Star Terry Rhoads Capt. Brent Peters Guest Star Bonnie Bartlett Dr. Sylvia Chalmers Guest Star Kim Wimmer Darlene Guest Star Stacy Haiduk Melissa Dorn Guest Star Tony Pasqualini Stanley Borden Guest Star Dean Norris Gunnery Sgt. Vestman Guest Star Donald P. Bellisario Executive Producer Jeff Woolnough Director Jack Bernstein Writer