‘Little House on the Prairie’ star issues warning about ‘predators’ lurking in Hollywood

Alison Arngrim was 48 years old when she publicly revealed she was sexually abused by a family member starting at age 6.

It was 2004 when the actress, who played mean girl Nellie Oleson in "Little House on the Prairie," first told her story to Larry King. She described how appearing in the hit TV series saved her sanity in her 2011 memoir "Confessions of a Prairie Bitch."

The star has become an advocate for child sex abuse victims, but her work is far from done, she insisted. 

Arngrim...