The Fifth Letter, by Nicola Moriarty

Fluid, vivid writing moves this story along at a cracking pace, but no element of the plot is credible, starting with the set-up of the story being told to a priest in the confessional. As with so many books in recent years it needed a damned good edit, which would have picked up and fixed the incoherent timeline and may have sent it back for a rewrite to flesh out the thin characters. But the almighty dollar rules and presumably the publishers thought such a basic investment was unnecessary as the book would sell on name alone, never mind the quality. Heavily manufactured twists and turns do little to disguise who done what and by the end you barely care because it’s all so stupid.