Bryant & May and the memory of blood

The defenestration of an impresario's young son was definitely not the best way to end the play's first night party. And the crime scene itself was most unusual, a locked bedroom. No sign of forced entry. No prints or traces of blood. Just a sinister, life-size puppet of Mr Punch lying on the floor ... It's a perfect case for Bryant and May and the Peculiar Crimes Unit but the Home Office wants them off the investigation, however. Delving into the history of London Theatre they uncover a maniacal killer at work - one who must be caught before it's curtains for everyone!