From 'Miss Irresistible' to Murderer Christine Paolilla's mug shot. She was apprehended at a hotel in San Antonio, Texas, where she had been holed up for months using heroin, and later convicted of killing Marcus Precella, Tiffany Rowell, Adelbert Sanchez and Rachael Koloroutis. Paolilla is appealing her conviction. Watch the full story on "20/20" Friday at 10 p.m.