her to write letters home and mailed them along with these pictures he took of her to show that she was all right. but even that small kindness carried a terrifying threat. that he knew where her family lived, and his bosses, powerful people, he said, would kill them if anyone ever went to the police. you now believe what he says? >> yeah, after all that time. yeah. i'll kill your brother. i'll kill your mother. >> in the fall of 1991 kirsten howard turned 17. she says she spent three of the most important years of her life as sex slave to an old man who kept her locked in an underground dungeon. while most girls have fond memories of those teenage years, kirsten says she's blocked almost everything out. she says she doesn't remember much about leaving the dungeon, only that shortly before he set