"The Beast Must Die" is a 2021 British thriller film directed by Gideon Kibble. The story follows a wealthy man named Tom Newcliffe, who invites a group of people to his remote estate. He believes one of them is a werewolf responsible for the death of his son and sets out to uncover the truth. The film is based on the 1950 short story "The Beast Must Die" by James Blish. It combines elements of horror and mystery, exploring themes of revenge and the supernatural. The film features a blend of suspenseful storytelling and character-driven drama.