Fifth volume of the Cthulhu Mythos gamebooks.

According to rumors, monstrous births and strange ceremonies in honor of pagan gods are taking place in the remote town of Dunwich, nestled in the mountains of Massachusetts. It seems that the Whateley family, fallen into degeneracy, performs obscure invocation rites atop Sentinel Hill, a hill topped with ancestral monoliths.

As a major authority at Miskatonic University, your mission is to penetrate the heart of this decadent land to discover what is disturbing the tranquility of its inhabitants.

Do the incessant squawks of the nightjars bear a sinister omen? What drives the Whateleys to do so much work in the immense granary of their farm? Who are the large quantities of livestock they are constantly acquiring intended for? Will you survive the abomination that threatens the village of Dunwich?