On December 30, 1999, 10-year-old Krystal Surles and her friend Kaylene Harris were attacked in Kaylene’s Del Rio, Texas home, by a knife-wielding intruder who slashed both girls’ throats. Kaylene died...Krystal not only survived the attack but was able to help a police sketch artist draw an image that led to the arrest of her attacker, Tommy Lynn Sells.  After his arrest Sells confessed to the crime and revealed that he had been traveling across the country killing men, women and children for 20 years and had never in the past left a witness alive.