Soul Harvest - Haunted Village Series, #4

Subject B will do anything to get his life back. But the dead have other plans.Kidnapped by the brilliant Professor Worthe, Vietnam vet Marcus Holt is forced to take part in a sadistic experiment. Worthe's game has one objective: to see how much fear a man can survive. Now known as Subject B, Marcus is about to discover the answer to that question. Whether he likes it or not. Trapped in Worthe's haunted village, Marcus and his team stumble across Subject H, a frightened young mother eager to reunite with her child.
She soon becomes the target of a ghost drawn to her fear and anguish. A wrathful spirit that stalks them all from the shadows, waiting for a chance to wield his razor-sharp knife-to carve out the heart of any mother he can find.Marcus must call on every ounce of strength and courage to protect Subject H from the terror that hunts her. But even if they can escape Worthe's latest horror, another enemy lurks in the village.
a deadly spirit Marcus has faced before. This vicious ghost is about to end Worthe's experiment once and for all. By killing Marcus Holt.