Synopsis

It opens with a play within the play set five hundred years in the future. As this "play' unfolds, the theater is suddenly plunged into darkness, and an actor is shot and killed by somebody in the audience. From this point, there are weird, chilling developments—including a second murder, a vanishing corpse that reappears in the auditorium's rear, and disclosure that operatives of a spy ring are present. The mystery is finally unraveled by two detectives who've come to see the performance: Sergeant Kennedy and his proverb spouting assistant, Sam Lee. A lot of the action takes place in the auditorium with the audience sometimes taking part.