The Montgomery Manor Murders

ONE DAY. ONE HOUSE. THREE FLOORS. THREE BODIES. During one day of the annual open house of a grand stately home, three seemingly unconnected dead bodies are found on three separate floors - the lady of the manor in the private family quarters, a tourist visiting for the day in the public rooms, and a staff member down on the servant's floor. All killed by different methods, and no witnesses to how it was done.
With the world's media on his doorstep and the whole estate and family reputation at risk, the recently returned prodigal heir has to team up with the new housekeeper and the cousin of the dead tourist to find out how the victims were connected - and of course, who killed them, and why.