Imprisoned during the Spanish Civil War, John "Kit" McKittrick is released when a New York City policeman pulls some strings. Upon returning to America, McKittrick hears that a friend has committed suicide, and he begins to smell a rat. During his investigation, McKittrick questions three beautiful women, one of whom has a tie to his refugee past. Pursued by Nazi operatives, McKittrick learns of the death of another friend, and begins to suspect the dark Dr. Skaas.
John Garfield
as John 'Kit' McKittrick
Maureen O'Hara
as Toni Donne
Walter Slezak
as Dr. Christian Skaas
Patricia Morison
as Barby Taviton
Martha O'Driscoll
as Whitney 'The Imp' Parker
Bruce Edwards
as Ab Parker
John Banner
as Anton
John Miljan
as Inspector 'Toby' Tobin
Hugh Beaumont
as Otto Skaas
Jack Carr
as Danny, Cab Driver (uncredited)
George Lloyd
as Sergeant Moore (uncredited)
Fely Franquelli
as Gypsy Dancer (uncredited)
