We may receive a commission on purchases made from links. Espionage has always been popular on both the page and the screen. Whether it's an epic war story that involves someone going undercover ...

Add Yahoo as a preferred source to see more of our stories on Google. The cast of "NCIS" celebrates the 100th episode of the series. - John Shearer/Getty Images For the last two decades of his life, ...

Espionage has always been popular on both the page and the screen. Whether it's an epic war story that involves someone going undercover behind enemy lines, or following a more direct mission between ...