I don't think it could hurt to bring in all the family members (both sides) including cousins and the new stepmother's family as well for a new round of lie detector testing, with new people conducting the testing and maybe even a new machine and new questions. This case has gone cold, you never know, someone just may spill the beans and this child found. We all have been waiting for someone to come forward with information, well, maybe LE or better yet, FBI needs to try a different angle. Could shake the right person up.