Rattenbury Mystery — John Russell Fearn

When the infamous theatrical agent Amos Rattenbury is found stabbed to death in his London office, the weight of suspicion falls on Dorene Grey, a young actress. Assistant Commissioner, Sir Digby Hilton of Scotland Yard, is assigned to find the missing Dorene. However, she has two champions: Sir Digby's brother Terry, and the mysterious figure known as 'The Phantom of the Films'. And she will need their help to escape the fate planned for her by a cunning murderer.