Heidi Montag's father, Bill Montag, has been arrested for alleged child sex abuse and incest with a 13-year-old girl.
According to authorities, the alleged abuse went on for years until the girl turned 17, and that the child was allegedly abused at least 50 times, according to the complaint.
The alleged abuse happened between 1993 and 1998, which doesn't synch up with the victim being Heidi or her sister Holly.
The documents are pretty nauseatingly explicit in their allegations against Bill.
Sources close to Heidi and Spencer Pratt claim that the accuser "is determined to destroy the family," and that she allegedly stalked the reality TV couple at multiple public appearances.
We'll report more on this story as further details emerge.