Passenger to London (1937)
Not a bad little murder spy thriller and only 57 minutes long - typical of its type, with no one in it you've ever heard of.
Quite tense in parts, and one I don't regret watching, so 6/10
From the IMDb :-
"A British agent, carrying important papers, is knifed to death on a passenger train. Before his murder, he plants the papers in the trunk of a female passenger. Who will reach her first, the police or the killers? A taut, well-staged climax helps make this forgotten crime film a must-see."