The Calling of the Grave, the fourth book in the David Hunter series, follows the forensic expert as he is drawn back into a case he thought was long buried. Eight years ago, authorities believed they had uncovered the body of one of serial killer Jerome Monk’s victims, but the search ended in disaster. Now, Monk has escaped prison and is hunting down those involved in the original investigation. As Hunter returns to the moors, he realises that both the past and the present hold terrifying secrets—ones that refuse to stay buried.