Furious at being jilted at the altar by Margaret Langton, Charles Moray left England behind him. Four years later he returns only to discover that a criminal gang has been using his house to plan a vicious crime. The target is the beautiful Margot Standing, who stands to inherit a considerable fortune. But the gang has other plans for her.

Charles is appalled to discover that Margaret Langton is one of the conspirators. How did she come to be involved? And who is the terrifying masked man who has her in his thrall?