In France, “Red Widow” is what they called the guillotine. At the mansion where several generations of the executioner’s descendants live—an executioner who emigrated to England—there is a curse of its own: anyone left alone in one of the rooms for two hours is doomed to die. For a long time, that room was sealed.
But the new heir, together with friends, wants to run an experiment with the room. In the end, at the cost of the deaths of several people, a dog, and a parrot, the secret of the “Red Widow” is revealed.