From the back of the book:
December, 1891: The serene, snow-dusted shores of Lake Geneva, Wisconsin, mask a creeping dread festering beneath the icy waters. Once a haven for the wealthy elite and their opulent retreats, the town now trembles on the brink of madness.
The investigators awaken in the halls of Oakwood Springs Sanitarium, with no memory of who they are or how their recent pasts are entwined with the lake's grim secrets. As a malevolent fog rolls in, the stakes become clear: the ancient Potawatomi wards binding an unspeakable entity beneath the lake are failing.
Can you unravel the mysteries of the Covenant of the Drowned Eye, confront the terrifying Boilerheart Abomination, and stop the release of the Eye of the Lake before it's too late? Or will Lake Geneva become ground zero for an apocalyptic nightmare taht will shatter the boundaries between worlds?