To neighbors, she was the brave single mother...

Raising her five kids alone in a rundown section of Sacramento, Theresa Cross Knorr seemed like the ultimate survivor. But her youngest daughter, 16-year-old Terry, told police another story: one almost too terrible to believe.

But accused of imprisoning her children in a house of horrors...

According to Terry, Theresa--no longer the petite brunette she once was--had turned insanely jealous of her pretty eldest daughters and enlisted the help of her two teenaged sons in a vicious...