Murder Beneath the Tree

Ross MacAllister was walking through the woods when he heard an approaching horse. Its rider was unaware of his presence; she rode out of sight and out of his life. Within minutes she was murdered by a knife-man. After questioning by the police Ross went for a quiet drink; afterwards one of his companions was attacked by the knife-man. And MacAllister was near the scene of the next knife-man murder. The only way for him to clear his name was to catch the killer. But the killer had further plans...