The Obsidian Chamber

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, pursuing Constance's kidnapper through cit..