Will Mark Harmon Return to ‘NCIS’? Actor Can’t Make Up His Mind Amid New WWII Book

NCIS alum Mark Harmon co-authors book about real-life NCIS operation during Pearl Harbor

Mark Harmon Writes Book Based On How Real NCIS Agency Came To Be; Will Debut In November

Mark Harmon and Leon Carroll Jr. to Release Real-Life 'NCIS' Story in Non-Fiction Book 'Ghosts of Honolulu'