FROM THE SUNDAY TIMES BESTSELLING AUTHOR OF THE KIND WORTH KILLING 'A killer read with twist after twist!' JANICE HALLETT 'A shape-shifting psychological thriller.' THE TIMES 'So many great twists and a truly chilling villain . . . Swanson's best one yet.' MARK EDWARDS 'The talented Mr Swanson does it again.' SUNDAY INDEPENDENT After a whirlwind romance, quiet librarian Martha married Alan. But when she thinks she sees his mask slip, she starts to fear that his frequent travels might be a cover for something far more sinister. As she secretly starts to map his movements she unearths a string of dead women, but could these two things really be linked? Unsure of her own instincts, Martha turns to an old friend, Lily Kintner, who once helped her escape a toxic relationship in grad school. But what Martha doesn't know is that Lily has a dark side of her own . . . 'A clever, ingenious, edge-of-your-seat thriller.' LIV CONSTANTINE 'The stakes are high, the body count is higher, and yet I would still follow Lily anywhere.' STACY WILLINGHAM 'Menacing and exciting [...] It makes for a riveting entertainment.' SUNDAY INDEPENDENT 'Clever, scary, endearing and plotted like clockwork' CRIME TIME