You continue to post as though you think Gricar's only case in all the years that he had been DA was the 1998 case involving Sandusky and PSU. But you are overlooking the fact that as DA he handled far more cases than that. To simply link the Gricar disapperance to the Sandusky case requires one to ignore all of those other possibilities.
DA's have staff, including the police.
After all, Patrick Fitzgerald had plenty of time to ensnare Scooter.