Stranger on the Third Floor
Starring Peter Lorre, John McGuire, Margaret Tallichet, Charles Waldron, Elisha Cook Jr., Charles Halton, Ethel Griffies, Cliff Clark, Oscar O'Shea, Alec Craig
It's a drama and thriller movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Switzerland.