THE SUNDAY TIMES NUMBER ONE BESTSELLER After a tough week, Tanya Kaitlin is looking forward to a relaxing night in, but as she steps out of her shower, she hears her phone ring.  The video call request comes from her best friend, Karen Ward.  Tanya takes the call and the nightmare begins. Karen is gagged and bound to a chair in her own living room.  If Tanya disconnects from the call, if she looks away from the camera, he will come after her next, the deep, raspy, demonic voice at the other end of the line promises her. As Detectives Robert Hunter and Carlos Garcia investigate the threats, they are thrown into a rollercoaster of evil, chasing a predator who scouts the streets and social media networks for victims, taunting them with secret messages and feeding on their fear.  AS ADDICTIVE AS A TV BOXSET! PRAISE FOR CHRIS CARTER 'Carter has a background in criminal psychology and the killers at the centre of his novels are all the more terrifying for it' Mail on Sunday, chosen for 'If You Only Pack One' 'Carter is one of those authors who makes writing look effortless . . . I couldn't put it down' Crimesquad 'An insanely good crime series. Extraordinarily well written, high quality and high drama all the way' Liz Loves Books 'An intriguing and scary thriller' Better Reading 'A gripping feast of thrills' Shots 'A gripping psychological thriller' Breakaway 'Very satisfying read' Falcata Times