John Maine is a paranormal researcher and television personality at the end of the line. When he meets a lonely woman on a remote Essex beach, who tells him of a modern tragedy and an old mystery, he is drawn into what may well be his last investigation, a quest that leads him back to an old friend convicted of a terrible crime and perhaps guilty of others, a man with a strange obsession. Did a race of giants once really walk the earth? Maine is sceptical but as events unfold he learns of an ancient secret, acquires a dangerous enemy, gains new friends - and finds something wholly unexpected