The characters are attending a Masquerade Ball, a dinner party, or a similar event with a sizeable amount of people. Suddenly, all the lights go out, usually followed by chaos as the people scream and try to feel their way around in the dark. The lights come back on, and someone has been murdered during all the commotion. The characters now have a mystery on their hands - in the dark, anyone could have done it. Compare Darkness Equals Death, where the lights are already off. Examples of Lights Off, Somebody Dies include: