Mark Harmon and Leon Carroll Jr. have co-authored a new book about WWII hidden histories.Photo:Kevin Lynch; Harper Select; Theo Camacho

Kevin Lynch; Harper Select; Theo Camacho
Mark Harmon, known for his role as Leroy Jethro Gibbs on theCBS seriesNCIS, and Leon Carroll Jr., the show’s technical advisor, have co-written a book that echoes the beloved police procedural in more ways than one.
Ghosts of Honolulu: A Japanese Spy, A Japanese American Spy Hunter, and the Untold Story of Pearl Harbor,out this fall, is a historical account of the Japanese and American intelligence agents in World War II. The book sheds light on “the incredible high stakes game of naval intelligence,” says its publisher in a statement.“These are the real stories from those who were there,” Harmon tells PEOPLE over email. “It’s real and it’s our history.”
“Ghosts of Honolulu” tells of Japanese and U.S. intelligence agents in World War II.Courtesy of Harper Select, an imprint of HarperCollins Focus

Courtesy of Harper Select, an imprint of HarperCollins Focus
“On the show we used to use the fact that no one knew who this agency was or what they did as a point of humor, but for those doing this difficult job for real, there was nothing funny about it,” the Emmy-nominated actor says. “To provide these men and women a chance to tell their story, their REAL story, has been both fun and educational for me.”
Mark Harmon.Kevin Lynch

Kevin Lynch
Leon Carroll Jr.Theo Camacho

Theo Camacho
“Actors tell stories, so that part is comfortable,” Harmon says. “[But] I have enjoyed great teachers and help, [and] the idea to grow and learn something new every day.”
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.The book’s heart, however, is its historical basis. Intended to be the first installation in a series about U.S. national security,Ghosts of Honoluluwill recognize the accomplishments of crucial players in our country’s naval intelligence.“I would like the readers of the book to be much more informed about the wide reach of our agency and the role it has played in our country’s defense,” Carroll Jr. says. “Not only [in] providing an investigative service to the Department of the Navy but the role it has played in the security of our nation.”Ghosts of Honoluluwill be published November 14 from Harper Select, an imprint of HarperCollins Focus.
source: people.com