Jan Fabel, of the Hamburg murder squad, struggles to interpret the twisted imagery of a dark and brutal mind. Four days later, a man and a woman are found deep in woodland, their throats slashed, the names 'Hansel' and 'Gretel', rolled tight and pressed into their hands.
As it becomes clear that each new crime is a grisly reference to folk stories collected by the Brothers Grimm, the hunt is on for a serial killer who is exploring our darkest, most fundamental fears.
A predator who kills and then disappears into the shadows. A monster we all learned to fear in childhood.