The Arsenic Labyrinth (Lake District Series #3)

After ten years, Guy, a drifter with a taste for deception, has returned to Coniston in Englands Lake District and professes to know what happened to the missing Emma Bestwick. DCI Hannah Scarlett, head of Cumbrias Cold Case Review Team, re-opens the old investigation, and a shocking discovery makes it clear that there is more than one mystery to solve.