Ace of Space: 1944: Ace Egan, P.O.W.
by Drivtaan 
Captured by the Nazis, Lieutenant Frank “Ace” Egan is sent to Germany’s toughest stalag. When the Allied prisoners led by Colonel Hogan discover that the newest man in the barracks is really the Ace of Space, Hogan’s heroes come up with a plan to break him out of Stalag 13, even if it means shutting down their secret espionage operation. But when the mysterious double agent known as Doppelgänger becomes involved, will he or she turn out to be help or a hindrance?