Winter 1940: Police Inspector Henri Lefort's wishes for a quiet holiday season are dashed when the Gestapo orders him to investigate the disappearance of Dr. Viktor Brandt, a neurologist involved in a secret project at one of Paris's hospitals. Being forced onto a missing persons case for the enemy doesn't deter Henri from conducting his real job. A Frenchman has been beaten to death in what appears to be a botched burglary, and catching a killer is more important than locating a wayward scientist. But when Henri learns that the victim's brother is a doctor who worked at the same hospital as the missing German, his investigation takes a disturbing turn. Uncovering a relationship between the two men - one that would not be tolerated by the Third Reich - Henri must tread carefully.