Ein Fremder kam ins Haus
Starring Fritz Tillmann, Elfriede Kuzmany, Anne Kersten, Eva Maria Meineke, Robert Freitag, Hans Leibelt, Ruth Drexel, Hans Pössenbacher
It's a thriller and crime movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.