Mark Harmon

Mark Harmon is an actor and author known for co-writing the historical nonfiction book 'Ghosts of Honolulu: A Japanese Spy, A Japanese American Spy Hunter, and the Untold Story of Pearl Harbor.' He collaborated with Leon Carroll, a former NCIS Special Agent, to bring to light a true story of espionage during World War II. Harmon is also recognized for his long-running role on the TV series NCIS.