College freshman Claire Danvers has had enough of her nightmarish dorm situation, where the popular girls never let her forget just where she ranks in the school's social scene: somewhere less than zero.

When Claire heads off-campus, the imposing old house where she finds a room may not be much better.

Her new roommates don't show many signs of life, but they come out fighting when the town's deepest secrets come crawling out, hungry for fresh blood...