The first time Claire and Megan Deveraux receive a cryptic text from the anonymous “AMZ”, they decide it’s a sophisticated scam. But when further evidence of a long-lost sibling starts to add up, Claire begins to wonder whether there is merit to AMZ’s wild claims...or just photoshop and dumb luck? As the sisters weigh up the risks of pursuing a ruthless blackmailer’s trail, another victim is scrambling to keep his secret safe, whatever the cost.