Keenan, et al need to fully investigate Bill and Janet McReynolds. They need to go to Donna, Texas and all of the places Bill has lived, taught, worked, etc. and the same for Janet. They need to compare deaths in those locations and missing children-teens. They need to check out their travels and deaths and missings in those locations. They need to find out more about their previous marriages and spouses. They need to check out and interview all of their children. They need to check his military record. They need to pinpoint any times unaccounted for in his adult life. See if there was a juvenile record if not expunged. They should also meet with that private detective, Peterson. The list goes on and on. Should they do this for any other suspects you ask? No. Only the McReynolds since that is where the evidence leads.