“It was only a matter of time before its possession of me was complete and irreversible. Thinking I could escape it was but sheer madness, and the lull even more painful…”

Imprisoned for a crime he believes he didn’t commit, Leroy, a student at the Yale University, struggles to refute the allegation of murder of his mentor, Professor Howard Bingley.

It’s as if a whole year had been erased from Leroy’s mind, or something hinders his ability to recall his memories…

What did Leroy do in Brazil where he and Howard’s body had been found? What could have pushed him to shoot this man who he appreciated and held in high esteem?

Unobtrusively, the nightmares come back to Leroy. Howard’s mental degeneracy. The senseless trip through the Brazilian wilderness, hunting for a species of intelligent, subterranean creatures that Howard believed to be older that human. The nefarious black river that leads them to the lair of the creatures. The mysterious disappearance of their guide, Alvaro.

There is something dwelling in the caves. An entity, an evil of unknown origin.

The fight has begun. The fight to keep their sanity. The fight to survive.

But one does not escape the Elder God so easily. And once it has you in its grasp, your soul is condemned to roam eternally through the tunnels of the Gate to the Underworld.