The odd couple of detection - the brilliant but cranky Arthur Bryant and John May of London's Peculiar Crimes Unit - return in a tense, atmospheric new thriller that keeps you guessing right to the end. This time the detectives are up against a series of bizarre murders that defy human understanding - and a killer no human hand may be able to stop.
A mysterious stranger in outlandish Edwardian garb defaces a painting in the National Gallery. Then a guest at the exclusive Savoy Hotel is fatally bitten by what appears to be a marshland snake. An outbreak of increasingly bizarre crimes has hit London - and, fittingly, come to the attention of the Peculiar Crimes Unit.