Of interest regarding one of the victims' fathers:
"In a bizarre turn of events, Mark Byers--Christopher's stepfather--gave a hunting knife to documentarians Joe Berlinger and Bruce Sinofky while they were filming the first Paradise Lost feature. After noting what they thought was blood, Berlinger and Sinofsky gave the knife to police, who determined the blood matched Christopher Byers' blood type. Mark Beyers had initially claimed the knife had never been used, then after blood was found on it, he claimed he'd used it only once, to butcher a deer. When told the blood matched his son's type, Mark Byers said he had no idea how that blood might have gotten on the knife. During interrogation, West Memphis police suggested to Mark Byers that he might have left the knife out accidentally, and Byers agreed with this.
Mark Beyers' theatrical histrionics drew attention, and after the first trial, he had his teeth removed, never offering a "consistent rationale" for doing so. [4] (
http://www.ejumpcut.org/currentissue/goth/4.html) There has been speculation that Mark Byers killed the victims, and had his teeth removed to avoid their being matched with bite marks on his stepson's body."