When renowned archaeologist Professor Roderick Ainsworth unearths an ancient Roman temple of Mithras in London's Clerkenwell, his career is set to be crowned with a knighthood. Then a young analytical chemist is murdered in the temple, and circumstances suggest a ritual murder. On the same day, a prosperous manufacturer is found slaughtered at Carshalton. Again, evidence points to ritual sacrifice. Has the discovery of the Mithraeum revived a dormant cult of Mithras? Set in late Victorian times, "Depths of Deceit" is the sixth novel featuring Detective Inspector Box of Scotland Yard and Sergeant Knollys, who together probe into the professional lives of Roderick Ainsworth and his deadly rival, Sir Charles Wayneflete, to uncover the dreadful truth about the Mithras murders.