When the parents (and the boys) were intially interviewed, the shifting timeline and many of the conflicting details were not known to the public. I don't know if these inconsistencies were known to LE at that time, but my best guess is that at least some pertinent information came out afterwards. I am basing that on the subsequent public statements of the parents. No wonder LE wants to reinterview the principle witnesses. If the parents are innocent, there is a chance that this baby is alive, and every day that the parents refuse the interviews that could clear them and refocus the resources of this investigation lessens the chance that the baby will ever be found. LE has stated that they are not demanding interviews without the presence of attorneys so the only conclusion I can draw is that the parents are motivated by self interest and not the desire to find their child. All MOO.