A mysterious house sits on a corner block on a hill in St. John's, Newfoundland, in one of the oldest cities in North America, a non-descript, three-story wooden cube, going slowly to seed. When local cops, John Green, Janis Lodge and Todd Wiggins are sent to investigate a multiple murder on the top floor of the property, they start opening doors and uncovering secrets. But like peeling the layers off an onion, each door opened only leads them deeper into the mystery. There are houses like this all over the world, and those who suffer are drawn to them, as John, Janis and Todd have been drawn. They have found their way in. Can they find their way out again? And at what cost?

It starts with an odd hum that brings headaches and nosebleeds to the inhabitants of a remote, sleepy country town. Then a sinkhole begins to form…and out from that hole comes the townspeople's worst nightmares.Facing their fears and the growing madness, a group of survivors descend into the collapsed area in an attempt to save what is left of their town. Sacrifices will be required, but will they be enough?The hole is growing…spreading…and the horror within it is growing stronger…