When two burglars witness politician Nicholas Samson kill a young woman, they turn to Harry for help. Suspicion spreads, a blood-stained rug surfaces, and Harry finds herself confronted by a powerful and relentless foe.

Marcus fears he'll die while playing Macbeth, in a repeat of three previous fatal performances at the theatre. And when Fergus is nearly killed on the stage, Harry digs into the theatre's troubling history.