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 Rahnuma Panthaky Neera Kapoor Guest Star Niko Nicotera Albert Leary Guest Star Samantha Hanratty Young Woman Guest Star Matt Nolan Paul Spencer Guest Star Karole Foreman Lydia Miles Guest Star John Wesley Chaplain Samuel Kemp Guest Star Kirk Bovill Richard Sims Guest Star Ele Keats Judy Shaw Guest Star Dan O'Connor Pete Shaw Guest Star Marsha Kramer Old Woman Guest Star Bee-Be Smith Volunteer Guest Star Michael Turner Tucker Jerome Murray 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, Writer Donald P. Bellisario Executive Producer Michael Zinberg Director