Special Agent A.X.L. Pendergast is missing, presumed dead. Sick with grief, Pendergast's ward, Constance, retreats to her chambers beneath the family mansion at 891 Riverside Drive--only to be taken captive by a shadowy figure from the past - Pendergast's brother - thought to be dead. Proctor, Pendergast's longtime bodyguard, springs to action, chasing Constance's kidnapper through cities, across oceans, and into wastelands unknown. But Constance is really not kidnapped - she is working on a plan of her own.