These are the elements of the Hampstead Mystery that Detective Inspector Chippenfield of Scotland Yard must unravel with the assistance of the ambitious Detective Rolfe. But will he be able to sort out the tangled threads of this case and arrest the culprit before he is upstaged by the celebrated gentleman detective Crewe. Follow the details of this amazing case at it plays out across Hampstead, London and Scotland until it reaches a stunning conclusion in the courts of the Old Bailey.