You really can't go wrong with Ralph Richardson in a cast, and it holds true with "Clouds Over Europe," a 1939 film that also stars Laurence Olivier and Valerie Hobson. It's pre-WW II, and Richardson plays a secret service man in England who is convinced that a series of missing planes from diverse places is no accident. He's convinced the planes are being sabotaged, but by whom, and why? Olivier plays one of the pilots, and he's funny as well as handsome. Valerie Hobson is a reporter in an adversarial relationship with Olivier. She turns out to be related to someone else in the film.
But it's Richardson who steals the show with his eccentric portrayal of Major Charles Hammond, a man who always forgets his umbrella and returns for it. He helps to give this affair a lightheartedness that makes it enjoyable.
Recommended for its very good British cast.