What kind of a man would sell his own comrades to the enemy? That was what Lieutenant Dick Woolston had to find out -- and FAST, before any more Long Range Desert Group patrols were ambushed and murdered by the Nazis. Someone within the group was betraying them at every turn -- but who? Dick had been a plain-clothes man at Scotland Yard before the war. But never before had he had to get his man and fight a war at the same time. Here is a different kind of a mystery story -- with blood.