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 Don Swayze Logan Clay Guest Star Robert Rusler Lt. Col. Curtis Teague Guest Star Tom Bower Sheriff Miller Thompson Guest Star Jeremy Garrett Capt. Patrick Barnett Guest Star Timothy Bottoms Ritt Everett Guest Star Jennifer Hall Daphne Everett Guest Star Rob Boltin Capt. Rod Newell Guest Star Todd Kimsey Police Capt. Grant Guest Star Donald P. Bellisario Executive Producer James Whitmore Jr. Director George Schenck Writer Frank Cardea Writer