Dissolute Warsaw cabaret singer Vera Kowalska (Kay Francis) freely admitted to the slaying of the accomplished concert pianist Michael Michailow (Basil Rathbone). What the authorities can't understand is why...and in flashbacks, the truth is laid bare regarding the killer, the victim, and his teenaged protégé (Jane Bryan). Fact-inspired tale, remade from the 1935 German effort "Mazurka," co-stars Ian Hunter, Donald Crisp, Laura Hope Crews. 87 min. Standard; Soundtrack: English.