Maisie Cooper is looking for peace and quiet. But the arrival of a troupe of actors for a new production at the local theatre turn her best laid plans upside down. Among them is the young French actress, Adélaïde Amour, who appeals to Maisie for help as she struggles to prepare for her new role.

As opening night approaches, a terrible crime is committed, and a body is found concealed behind the scenes in the theatre. Can Maisie unravel a real-life plot worthy of a great play? Or will the killer strike again?