The Stranger

The Stranger is a 1946 American thriller film noir directed and co-written by Orson Welles, starring himself along with Edward G. Robinson and Loretta Young. Welles's third completed feature film as director and his first film noir, it centers on war crimes investigator Wilson tracking high-ranking Nazi fugitive Franz Kindler to a Connecticut town. It was the first Hollywood film to incorporate actual documentary footage of the Holocaust.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster by "Copyright 1946 RKO Radio Pictures, Inc. " (Public domain).