Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Jeff Branson Navy Cmdr. Chad Hendricks Guest Star Charlie Schlatter Lorne Davis Guest Star Craig Parker JAG Maj. Richard Huggins Guest Star Matthew Arkin Dr. Graham Novak Guest Star Walter Perez Lt. Michael Waters Guest Star Chloe Lanier Emma Carter Guest Star Dean Cameron Landlord Guest Star Blake Lindsley Belinda Carter Guest Star David Mattey Homeless Man Guest Star John R. Colley Christopher Ramos Guest Star Justin Chu Cary Staff Sgt. Martin "Shooter" Roe Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer George Schenck Writer Frank Cardea Writer Dennis Smith Director