Years ago, a murder was committed on the night of a costume party thrown by Sir Richard Haydon. Sir Richard's estate contained the grove of Astarte, which held a mysterious stone summer house rumored to have been the site of numerous sacred rites in years long past. In a surprise act, the lovely Diana Ashley enacted the role of Astarte, startling Sir Richard who stumbled and fell. When the others reached his body, he was found dead of a knife wound to the heart. After all these years, can the Club still solve the case?