A tragic disappearance
After a harrowing, otherworldly confrontation on the shores of Exmouth, Massachussetts, Special Agent A.X.L. Pendergast is missing, presumed dead.
A shocking return
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.
An international manhunt
Proctor, Pendergast's longtime bodyguard, springs to action, chasing Constance's kidnapper through cities, across oceans, and into wastelands unknown.
But in a world of black and white, nothing is as it seems.
And by the time Proctor discovers the truth, a terrifying engine has stirred—and it may already be too late.