Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Cote de Pablo NCIS Special Agent Ziva David Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Lauren Holly NCIS Director Jenny Shepard Actor David McCallum Dr. Donald "Ducky" Mallard Actor Jessica Steen NCIS Special Agent Paula Cassidy Guest Star Christopher Shyer Kyle Boone Guest Star Lawrence Monoson Adam O'Neill Guest Star Chad Donella John Briggs Guest Star Tom Wright Warden Sam Kelleher Guest Star Scott Williamson Virginia Governor Charles Norin Guest Star Stephanie Mello NCIS Tech Guest Star Donald P. Bellisario Executive Producer William Webb Director Jeffrey A. Kirkpatrick Writer John C. Kelley Writer Laurence Walsh Writer Christopher Silber Writer