I tend to agree, they do both Larry and Sara a disservice by failing to give credit where credit is due. As with any inquiry going back so far in time it's a certainty that it will be far from easy or straight forward given the passage of time. I daresay that any new investigation into the events surrounding Jim's tragic demise would run into similar problems. That said, perhaps Larry may have turned up some information in the course of his research for his book about Jim that despite the passage of time still could have the power to rattle a few cages and possibly make a few people nervous in the process..... Who knows.