The Obsidian Chamber

After a harrowing, otherworldly confrontation on the shores of Exmouth, Massachusetts, 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.

After Pendergast is presumed dead from a supernatural encounter, his bodyguard Proctor is the only one who can chase a kidnapper across international waters and into the deadly unknown.
A TRAGIC DISAPPEARANCE

After a harrowing, otherworldly confrontation on the shores of Exmouth, Massachusetts, 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 . . .