Invisible Foe

Dunkirk May 1940 with the French army retreating and the British army fleeing back to England...SS Leader Heir Himmler devises a plan to plant a German agent amongst the British troops and with limited help gives him carte-blanche to cause as much havoc as possible in England.Meanwhile in Scotland Yard London a counter-espionage team of Police Officers are making ready to combat this threat. Leading the team are ex-Rifle Brigade Sergeant Dave Selby and ex-Rifleman Bill Auger - now DI Selby and DS Auger.