Harry is Spooked by Murder

The impossible happens when the matron of a stately but ghostly manor is found murdered in a windowless room locked from inside, but the killer is not there. How'd they get out?"By floating through solid matter!" the family explains, blaming the heinous crime on a vengeful spirit whom they insist haunts their eerie house."A ghost?!" The police laugh that off, but they're stumped to find a rational explanation - or the killer. So the family hires private detective Harry Bittercress and his psychic wife to catch the killer. With her otherworldly senses and his real-world sleuthing, will they solve this locked room mystery - or be spooked to death trying?