Edward "Teddy" Bare is a ruthless schemer who thinks he's hit the big time when he kills his older wife, believing he will inherit a fortune. When things don't go according to plan, Teddy sets his sights on a new victim: wealthy widow Freda Jeffries. Unfortunately for the unscrupulous criminal, Freda is much more guarded and sassy than his last wife, making separating her from her money considerably more challenging.

Czechoslovakia, March 1939, on the eve of World War II. As the German invaders occupy Prague, inventor Axel Bomasch manages to flee and reach England; but those who need to put his knowledge at the service of the Nazi war machine, in order to carry out their evil plans of destruction, will stop at nothing to capture him.