The fourth book in the Tom Thorne series, from bestselling author Mark Billingham. A MAN WHO KILLS FOR MONEY X marks the spot - and when that spot is a corpse's naked back and the X is carved in blood, DI Tom Thorne is in no doubt that the dead man is the latest victim of a particularly vicious killer. A BRUTAL VENDETTA This is brutal turf warfare between north London gangs. Organised crime boss Billy Ryan is moving into someone else's patch, and that someone is not best pleased. A COP WHO IS PLAYING WITH FIRE And when an X is carved on DI Tom Thorne's front door, he knows the smouldering embers of this case are about to erupt into flames... __________ Read what everyone's saying about the heart-racing Tom Thorne series: 'Literary superstar' Mail on Sunday 'Ingenious' Guardian 'Ground-breaking' Sunday Times 'Mark Billingham gets better and better' Michael Connelly 'A cracking read . . . I couldn't put it down!' Shari Lapena 'A damn fine storyteller' Karin Slaughter 'Twisted and twisty' Linwood Barclay 'One of the most consistently entertaining, insightful crime writers working today' Gillian Flynn 'The next superstar detective is already with us. Don't miss him' Lee Child