Thirteen years ago, the youngest member of the Wagner family vanished without a trace. Now, she's back - and things are worse than they ever could have imagined... because the girl who returned is not the same sweet, bubbly child they once adored.

As the years pass, it becomes clear that Cindy is… odd. Whatever happened to her during her years in captivity left her changed. And when bodies start showing up, the Wagners find themselves thrust into a vicious game of survival, forced to face the unthinkable task of deciding where their loyalties lie. With their conscience? Or with their Twisted Sister?