Dangerous Crossing

Dangerous Crossing is a 1953 blackandwhite film noir mystery film, directed by Joseph M. Newman and starring Jeanne Crain and Michael Rennie, based on the 1943 play Cabin B13 by John Dickson Carr.

That night, John calls Ruth with a cryptic warning not to trust anyone. A divorcee traveling solo Marjorie Hoshelle and the stewardess take an interest in Ruth. And Dr. Manning Michael Rennie spends time with her, assuming a clinical demeanor and getting her to open up about the recent death of her father, a wealthy steel executive.Ruth decides to put on an act and agrees that shes been foolish, but mysterious things continue to happen. Ruth and Dr. Manning get closer, and a man who walks with a cane seems to stalk her. ........

Source: Wikipedia