Aircraft factory worker Barry Kane flees across the United States after he is wrongly accused of starting the fire that killed his best friend.
Charlie's visit to Paris, ostensibly a vacation, is really a mission to investigate a bond-forgery racket. But his agent, apache dancer Nardi is killed before she can tell him much. The case, complicated by a false murder accusation for banker's daughter Yvette, climaxes with a strange journey through the Paris sewers.
A nurse's brother who's pursued by the mob, hides out in a hospital by pretending to be a patient.
