Set in Paris, Under My Skin stars John Garfield as a washed-up jockey who has stolen money from a crooked gambler (Luther Adler).

In the winter of 1938, Paris is crowded with refugees from the Nazis, who live in the black shadows of night, trying to evade deportation. One such is Dr. Ravic, who practices medicine illegally and stalks his old Nazi enemy Haake with murder in mind. One rainy night, Ravic meets Joan Madou, a kept woman cast adrift by her lover's sudd...

An American writer moves to Paris to be closer to his daughter and finds himself falling immediately on hard times.

A rich banker is actually a crook. His mistress, an alien, wants to become French and the only way is to marry a Frenchman.

A self-serving journalist uses influential women in late-1800s Paris and denies the one who truly loves him.