The Interrupted Journey (1949)

A struggling writer (Richard Todd) is leaving his wife (Valerie Hobson) and running off with his mistress (Christine Norden). As their train speeds off to their destination however, he has second thoughts and pulls the emergency cord and gets off the train. But it doesn't end there for him, it turns into a nightmare when his mistress turns up murdered and he becomes the prime suspect. Directed by Daniel Birt, this faux Hitchcockian thriller (some refer to it as British noir) has a marvelous premise but that is squandered by a weak script and direction and an ending that's a total ripoff. A contrived ending that had been used before (and unfortunately many times since) when writers painted themselves into a corner and needed a quick out. It's a pity because the film had me intrigued until then. With Tom Walls, Vida Hope, Dora Bryan and Alexander Gauge as the mistress's husband, whose performance is so bad that it threatened to derail the movie even before that heinous ending.