Robin, I've done some research on victim choice in predators who target children
from 'World of Forensic Science':
Sexual psychopaths are a subcategory of sexual predators who are characterized as being far more likely to rape (and/or commit homicide) than simply to molest their victims. They are more likely to victimize both children and adults, rather than one or the other. Their criminal sexual predatory behavior, if they are motivated by thrill-seeking rather than by specific fantasies, may be directed into indiscriminate victim choice, not targeting one or a small number of victim types.
Someone capable of Lonnie's murder definitely fits the description of 'psychopath'.
from 'World of Forensic Science':
Sexual psychopaths are a subcategory of sexual predators who are characterized as being far more likely to rape (and/or commit homicide) than simply to molest their victims. They are more likely to victimize both children and adults, rather than one or the other. Their criminal sexual predatory behavior, if they are motivated by thrill-seeking rather than by specific fantasies, may be directed into indiscriminate victim choice, not targeting one or a small number of victim types.
Someone capable of Lonnie's murder definitely fits the description of 'psychopath'.