The Woman In Green is a 1945 Sherlock Holmes movie starring Basil Rathbone and Nigel Bruce as Holmes and Doctor Watson respectively.
A series of murders against women are taking place, where a finger is sliced from the victim.
It turns out to be an elaborate blackmail scheme, whereby rich men are hypnotised and they think they’ve committed the murder.
There is an appearance from Professor Moriarty (played by Henry Daniell) who ends up falling to his death.
Or does he? He seems to bounce back every time.