Some doors are not meant to be opened.

Robert Mendoza has spent two years studying the dark arts. Tonight, in an abandoned warehouse on the edge of the Pasquotank Basin, he intends to summon a demon.

He succeeds beyond his worst nightmares.

What answers his call is not the minor spirit he sought, but Ubbar — the many — led by Samael, an ancient intelligence that predates life itself and views all living things as a corruption to be cleansed. His circle of protection has been swept aside. His binding spell is useless. And he is no longer in his world.

He is in theirs.

With nothing left but his wits and three desperate spells, Robert must find a way out of the Pit of Wrath — or spend eternity in it.

Some knowledge costs more than ignorance ever could.