Memory man FBI agent， Amos Decker， returns in this action-packed thriller to investigate the mysterious and brutal murder of a federal judge and her bodyguard at her home in an exclusive， gated community in Florida。

Things are changing for Decker。 He’s in crisis following the suicide of a close friend and receipt of a letter concerning a personal issue which could change his life forever。 Together with the prospect of working with a new partner， Frederica White， Amos knows that this case will take all of his special skills to solve。

As darkness falls， evil comes to light 。 。 。

Judge Julia Cummins seemingly had no enemies， and there was no forced entry to her property。 Close friends and neighbours in the community apparently heard nothing， and Cummins’ distraught ex-husband， Barry， and teenage son， Tyler， both have strong alibis。 Decker must first find the answer to why the judge felt the need for a bodyguard， and the meaning behind the strange calling card left by the killer。

Someone has decided it’s payback time。