He attacked Kaylene and when he began touching her she screamed and he slashed at her throat. He then went after Krystal, cutting her throat, but she managed to survive the attack.
It was due to Krystal's excellent recall that helped a forensic artist come up with a sketch that closely resembled Sells and eventually led to his arrest.
After his arrest Sells confessed to over 70 crimes throughout the country. To read about his childhood years and his crimes, see the Profile of Serial Killer Tommy Lynn Sells.