Peter Lorre seldom sang in movies, and when he did, later in his career, as in "Silk Stockings" (1957), he was dubbed. But he had been a cabaret singer in his youth, and this film contains possibly the only example of his singing when he does a duet with Nora Gregor, "Ja die Polizei, die hat die schönsten Männer," in which they sing about how young women love policemen.
Final film of Lya Christy.