The Killer...
This is a murder mystery.
BUT if you look at the cast-list on IMBb, you can very easily work out who the killer is.
What's worse, Renown, the company that released the DVD in Britain has also put that same cast list on the cover of the DVD... "so that's the killer", no need to watch the movie.
Renown is a strange company. They release a lot of forgotten, obscure British films, but their credentials as
movie-lovers are a little suspect when they can proudly announce that some of their films are colourized,
and often, with their mystery releases, you are advised not to read the back of the DVD as they have no compunction in letting you know who the killer is.