"As children, Sam and Elli were two halves of a perfect whole: Gorgeous identical twins whose parents sometimes couldn't even tell them apart. They fell asleep to the sound of each other's breath at night, holding hands in the dark. And once Hollywood discovered them, they became B-list child TV stars, often inhabiting the same role. But as adults their lives have splintered. After leaving acting, Elli reinvented herself as the perfect suburban wife:...

Bennie Rosato looks exactly like her identical twin, Alice Connelly, but the darkness in Alice's soul makes them two very different women. Or at least that's what Bennie believes, until she finds herself buried alive at the hands of her twin. Alice underestimates Bennie, though, and the evil she has unleashed in her twin's psyche, as well as Bennie's determination to stay alive long enough to exact revenge.