Boston, 2019. FBI Special Agents Aaliyah Davis and Simon Jones, looking into a case long-thought solved, find themselves on the doorstep of a person of interest. Reports of a few missing bodies wouldn’t normally interest the FBI, but something about this case just doesn’t add up. Despite having few leads to go on, the pair hope asking this person the right questions about the ‘red tree’ might get them somewhere. But as the saying goes, be careful what you wish for – some cases are best left closed… Louisiana, 2005. A series of strange murders has blighted the backwater town of Le Carré and the FBI sends one of its young recruits, Special Agent Francis York Morgan, to investigate. Befriended by the sheriff’s daughter, who seems older than her years, the two soon set out together to find the truth. On the surface, the peaceful town and its kind residents seem harmless enough. But a darkness grows beneath and, as casualties mount up, Special Agent Morgan must find those responsible before it swallows him too…