Robin Jarvis is a British children's author who has entertained (and pleasantly terrified) generations of children with his brilliantly imagined dark fantasy stories, including the Deptford Mice and Whitby Witches series. He studied graphic design in Newcastle and then worked in television and advertising making model monsters and puppets before writing The Dark Portal, the first book on the Deptford Mice trilogy, which was the runner up for the Smarties book prize in 1989. The Final Reckoning is the final book in the trilogy, following on from The Crystal Prison.