(Obsession) The Hidden Room - 1949 ****

Psychiatrist Clive believes his beautiful wife Storm (what a name!) is having an affair, and his fears are justified when he arrives home one evening and, standing in the shadows, sees his wife come in with her lover Bill. Once Clive confronts them it is clear his motives are dangerous and when he invites Bill out for a walk to 'discuss things' (it's the middle of the night) Storm is adamant that Bill will be killed. What she doesn't know is that Clive has taken Bill to a secret bunker-type room underground round the corner, and is keeping him chained to the wall. He tells Bill that it's only a matter of time before he disposes of him, but won't say when.

It's incredibly atmospheric and tense, and I love how calm the two men are around each other, nothing like being spurned by your wife for a younger lover and having to keep your cool. Sally Gray is gorgeous and Robert Newton is suitably suave but creepy in equal measures. I watched this years ago and never forgot it.