Black Comedy, a one-act farce by Peter Shaffer

When light and dark are transposed, hilarity is sure to ensue. So that when the stage is lit the cast are supposed to be in darkness and only when the stage is dark are they supposed to be able to see each other and their surroundings. In the play, a young sculptor, Brinsdley, and his fiancée, Carol, have borrowed some expensive antique furniture from a neighbor's flat without his permission to impress an elderly millionaire art collector. When the power fails, the neighbor returns early, other people also arrive unexpectedly, and matters descend into near-chaos.