"Dick opened the door again swiftly, Vera clinging to him--and they were so astounded at what they saw that he forgot for the moment to slam the door shut again. For the phantom was there--clearly visible in the sunlight, which now blazed across the upper half of the great window. A strange, incredible caricature of a being hung in the dusty air, a haze of blurry light surrounding it from the back. There was the pointed tail, the simian ears, the long needle-chinned face, bent arms flexed as though to pounce forward. He seemed to be grinning horribly. Yet he was in mid-air and through him the ancient stone wall could be distinctly seen." This was the ghost--the horror--that everyone knows haunts Sunny Acres Castle, the house that Vera Grantham has just inherited from her late uncle. Together with her boyfriend, Dick Wilmott, she must uncover the secret behind the mansion--a secret worth killing for! A great mystery in the classic British tradition.