This well executed, taut drama deals with German prisoners in an Allied POW camp, a rare subject in American films. Keith is an Irish intelligence agent sent to Camp McKenzie in Scotland. After a prison riot is quelled with fire hoses, Keith suspects it was merely a ruse to distract
attention from an escape plot. This theory is proven to be true after Janson, a homosexual prisoner ostracized by his fellow inmates and severely beaten during the riot, mumbles something about an escape. But Janson is mysteriously strangled before regaining consciousness and Keith is forced into
a cat-and-mouse game with Griem, a captured U-Boat captain the Irishman suspects is behind ...