An adaptation of an Edgar Wallace mystery, this is quite a strange story if we are to be honest. Ten years before three men carry out a robbery: Marx (Alastair Sim), Connor (Henry Oscar) and the masked mastermind O'Shea. After the robbery O'Shea betrays his fellow thieves and they end up spending ten years as guests at His Majesty in the nick.
Now they are released and vow to hunt down O'Shea and get their revenge... and the gold. But then the action suddenly switches to a mysterious guest house run by Colonel Redmayne (Arthur Wontner) with guests including the rather eccentric Mr Goodman (Wilfred Lawson). At night a spectre plays an organ and laughs evilly. Marx and Connor are in the area, is Redmayne O'Shea? Soon though Connor is found dead...
So they are a few layers to the mystery, the identity of O'Shea, who is the mysterious organ player and who is committing the murders. Of course all three could be the same person. The film is interesting rather than thrilling, like many British films of the period it can be a bit slow and wordy however some of the performances are very good especially Alastair Sim, who masquerades as a vicar, and Bernard Lee as a drunk (or is he?) It is worth sticking with the film though as the ending is excellent.