Gripping Mystery Thrillers

This book contains four mystery thrillers. * What Lurks Behind The Keyholes- A small group of young adults spend the night at a mysterious castle. After discovering a secret passageway and hearing strange noises, they begin to realize that the building has quite a history. * Where The Wind Never Goes- Strange, baffling disappearances begin to happen at a park. Feeling empathy for the victim's families, a sleuthing couple decides to investigate for themselves, hoping to generate some answers. * Sleepless Awakening- After a traumatic event, a man begins to have trouble determining the difference between his unusual dreams and reality. * Secret Corridor- A man is suspiciously committed to an asylum, and what he discovers leads him to question his sanity. Is he insane? Or is there something about the asylum that he doesn't know about?