Take One False Step (1949) | FILM NOIR/THRILLER | FULL MOVIE

Prof. Andrew Gentling, in Los Angeles to help found a new college, is inveigled by old flame Catherine Sykes into a midnight drive. Next day Catherine is missing, believed killed; friend Martha convinces Andrew that he's a prime suspect and should investigate before he's arrested. But this only puts Andrew in a more deadly kind of danger.

IMDb: https://www.imdb.com/title/tt0041945