This is part of the Robert Siodmak season at BFI and also screens on 30 April. Details here.
Chicago Reader review:
A demented melodrama from 1944, starring the most unlikely film noir couple of all time, Gene Kelly and Deanna Durbin. Kelly is a murderous Creole; Durbin is a sweet young thing from Vermont who supports him through thick but mostly thin. This bizarre film was the product of a collaboration between Germanic stylist Robert Siodmak (Phantom Lady) and scenarist Herman J. Mankiewicz (Citizen Kane). Somewhere in the background lurks a Somerset Maugham story. Highly peculiar, and a must for anyone who has suffered through One Hundred Men and a Girl.
Here (and above) are the opening titles.