Double Cross by James Patterson.
Just when Alex Cross's life is calming down, he is drawn back into the game to confront a criminal mastermind like no other. The elaborate murders that have stunned Washington, DC, are the wildest that Alex Cross and his new girlfriend, Detective Brianna Stone, have ever seen. This maniac adores an audience, and stages his killings as spectacles in public settings.
SKU: ISBN 0316015059