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 Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Joe Guzaldo Pete Iger Guest Star Susan Misner Leah Mayne Guest Star Christine Lakin Rachel Wells Guest Star Alex Hyde-White Dr. Adam Tallridge Guest Star Michael Rose Marine Maj. Gordon Holcomb Guest Star John Edward Lee Former Marine Sgt. Matthew Gontz Guest Star Wolfgang Bodison National Park Inspector Edward Killian Guest Star Robert Maxhimer National Park Officer Will Elliott Guest Star Virginia Watson Rugth Corruthers Guest Star Ryan McCann 1st Lt. Mayne, Christian Wells Guest Star Lauren Sanchez NCIS Special Agent Sanchez Guest Star Sarah Lewis ICU Doctor Guest Star Donald P. Bellisario Executive Producer Mark Horowitz Director George Schenck Writer Frank Cardea Writer