"It's really important to these families that we keep the conversation going, and keep pressure on law enforcement," Thomas said. "We need them to keep putting resources into this case. Experts tell me this is a solvable case — there's a ton of evidence, some of it still untested. The only way to keep pressure on law enforcement is to keep the conversation going. Blaine and Victoria's book, which they've worked very hard on, allows us to maintain that conversation."