In this mystery, a producer reopens a theater where five years before, a lead actor was killed on stage during a performance. The murder remained unsolved. To solve the mystery, the producer stages the same play with the same cast. As the play is performed, the same series of events occurs and the lead actor vanishes. It is eventually discovered that a masked stage manager is behind the it all. He has set up the whole thing to force stockholders to withdraw from the production.