After surviving a home invasion, Sydney Burgess begins to realize that there is something, literally, inside her—something malevolent.
It’s the setup to many a psychological thriller: A woman finds a masked stranger in her house. She manages to cut herself loose and escape. That’s Sydney Burgess’ first memory, anyway, when she awakens in the hospital, but then she learns that the intruder is dead. Stabbed 28 times, actually. Sydney has no memory of this brutality, but as she returns home with her boyfriend and 11-year-old son, she notices other strange things: posters that seem to drip from the walls, a mysterious mechanical toy. As a former addict now nine years sober, Sydney feels like she’s living a double life at the best of times; as memories begin to resurface about the killing of the stranger, Sydney finds that there is something inside—a force, an entity, a power (it’s unclear)—driving her to investigate him. Discovering messages from the murdered man to her boyfriend, she realizes that they are connected through a pharmaceutical company. Then, through flashbacks, it's revealed that Sydney, just like the stranger, has been part of an experiment meant to temper the memories of addiction. Instead, things continue to go horribly wrong until there is nothing but carnage and tragedy and a deep, deep darkness. The “science” of this novel is shady and slight, which makes it hard to understand what's really going on. The title conjures up a tradition of visitations both divine and demonic, yet the answer is decidedly unmystical, even if it is a bit mystifying. For a while, it even seems like the darkness inhabiting Sydney may be a metaphor for the haunts of addiction. Then, once things are “explained,” the story really goes off the rails.
Content to shock with gore and vague psychological discomfort.