Comment: What is truly disturbing in this is that between the young people now charged, the friends they certainly told or suspected they were involved (and who knows how many other in their circles had knowledge or suspicions and said nothing as they watched the news reports of the agony of David's family, as well as the hundreds of people trying to help solve the mystery) none of these many people bothered to speak up to alleviate the suffering.  The utter cold-bloodedness of it all is unthinkable.