Clue

Dr. Blackwell Boddy has invited 12 guests over for what he claims to be a normal dinner party, though he soon reveals that he’s been blackmailing all of them, and plans to exploit one more large sum of money from each of them before fleeing the country. Later that evening though, Dr. Boddy is found dead in the Cellar, having been drug there in an attempt to hide his body, with one of the guests having murdered him. The guests quickly discover all the doors are locked with the police on the way, so they must figure out which one of them is the murderer before the murderer picks off all of them to leave no witnesses.