You may recognize the voice of Edward Brophy, who plays convicted killer Rollo. In addition to supporting roles and character parts in dozens of well-known films, Brophy also was the voice of Timothy, the circus mouse who befriended and mentored the flying baby elephant in Walt Disney's Dumbo (1941).
This film was directed by one of the all-time great German cinematographers, Karl Freund. One of his directors of photography on this film was one of America's all-time great cinematographers, Gregg Toland.
Peter Lorre was under contract to Columbia Pictures. He agreed to be loaned out to MGM for this film if Columbia would do a film version of Crime and Punishment (1935) with him in the role of Raskolnikov.