A famous actress comes to the Colonists Club to perform in a fundraiser and stuns everyone by dropping dead onstage. Convinced the killer is still in the room, Chief Superintendent Munro locks all the doors and gives Blake just one night to prove himself by solving the murder.

Blake is called to a hotel where the owner has found a body in one of the rooms. His investigation takes in a shady business deal and a young woman in Mattie's care who has lost her memory after a car crash.