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