Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Sean Murray NCIS Special Agent Timothy McGee Actor Emily Wickersham NCIS Special Agent Eleanor "Ellie" Bishop Actor Wilmer Valderrama NCIS Special Agent Nicholas "Nick" Torres Actor Maria Bello Special Agent Jacqueline "Jack" Sloane Actor Brian Dietzen Dr. Jimmy Palmer Actor Diona Reasonover Forensic Scientist Kasie Hines Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Pam Dawber Marcie Warren Guest Star Steven Bauer Miguel Torres Guest Star Tijuana Ricks CIA Agent Pamela Walsh, Woman Guest Star Christine Dunford Jeri Fleckman Guest Star Alex Feldman Retired Marine Sergeant Thomas Baird Guest Star Stephanie Cleough Kelly Larson Guest Star Ektor Rivera Father Guest Star Connie Jackson Elaine Guest Star Jeff Elam Lead Detective Guest Star Tiago Martinez 5-year-old Boy Guest Star Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer Scott Williams Executive Producer Donald P. Bellisario Executive Producer Marco Schnabel Writer James Whitmore Jr. Director