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 Jessica Walter Judith McKnight Guest Star Richard Riehle Walt Osorio Guest Star Chris Gartin Jason Tupperman Guest Star Todd Louiso Lyle Waznicki Guest Star Matthew John Armstrong Navy Seaman Michael Hayes Guest Star Nick Toren Dwight's Father Guest Star Paul Mabon Lucas' Father Guest Star Nate Scholz Todd Bennett Guest Star Joe Pistone Prison Guard Guest Star Lauren Bray Makaela Hayes Guest Star Iris Almario Natalie Tupperman Guest Star Mataeo Mingo Lucas Guest Star Zeb Sanders Dwight Guest Star Jonathan Salisbury Stephenson Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer, Director Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer Scott Williams Executive Producer Donald P. Bellisario Executive Producer Brendan Fehily Writer