Was Diane really doing anything wrong? Surely no-one begrudged her odd pence? But how to make her every single action appear normal when each of her accounts, all 37 of them, were churning thousands of pounds her way week after week. The Bank had to know, but not how to act without advertising that every customer was vulnerable? Of course, it was all son Luke's fault, this special talent: embedding the trapdoor, the invisible interest payments? And what harm for a year, a few million pounds un-noticed? So why a breakdown, why wreck her retirement plans? And another threat: had Luke any...