Every Trick in the Book

So runs the blurb of Schooled in Murder, a crime novel written by Ben Joseph, who is found dead in Barnes Pond the morning after giving a talk as part of the Barnes Book Festival. DI Garibaldi and his team are shocked to discover that the writer has been killed in exactly the same place, and in exactly the same way, as the victim in Schooled in Murder'. When they look at the novel they see more connections with real life. Ben Joseph is the pseudonym of Liam Allerton who , like the victim in his novel, is a retired teacher. And he taught at St Mark's, a school very similar to St Jude's, the school in his novel. But is that where the similarities end? How much of Allerton's own life, and the lives of those he knew, had he put into his novel? And could the clue to the killer's identity lie in its pages?