You're spending a lovely evening with family, friends, colleagues. But the idyllic scene is just a façade: one of you is a murderer! Your mission? To find out whodunnit, with the help of dialogue scenes, secret clues, treacherous letters, shocking photos and secret documents. Not to forget the voice of Chief Inspector Watson with a few more surprises in store. But it won't be easy. Every guest has a dark secret .... Cornwell 1953. Castle Darkmore is the perfect location to shoot a horror film. Within its crumbling walls, there's plenty of rusty armour, creaking doors - and, above all, a genuine ghost. In the 16th century, the unfortunate Lady Darkmore fell to her death here, treacherously murdered by her unfaithful husband. As she lay dying, Lady Darkmore cursed the house, and threatened all adulterers within its walls with certain death. One stormy winter's night in 1953, a film crew staying at the ancient castle to shoot a movie come upon a terrible sight: Oscar Wilder, the despotic film director and notorious ladies' man, has been brutally stabbed to death. In his room are clear signs that just before his death, he had a female visitor - and it wasn't his wife. Intriguingly, his bedroom door is bolted from the inside. And on the brocade robe of the ghostly Green Lady, which is on display in the castle tower, there are traces of fresh blood .... Who murdered Oscar Wilder? Was it the phantom Lady? Or was it a flesh-and-blood killer?