On September 31, 1948, a body is found near Borough Market. There are signs of foul play. During the autopsy, the coroner finds a note in the dead man's pocket. 'My dear Sir Thanatos; Shall we play? Yours, Makris.' So begins a deadly cat and mouse game with an unseen killer who taunts the famous detective Sir Thanatos Boyd, never considering that his prey might be a far more brutal killer than himself.