I hate to keep agreeing with you. But you're right. Read the transcript of the recent PC. Most of it makes no sense, IMO, if they already have a suspect. But it makes perfect sense if they have no idea who killed the girls. That DC emphasized "we're just getting started" and "we're not going to quit" is not only a message to BG but to the families, fellow LEOs, and the GP. In other words, they've had to rethink their strategy and, yes, go back to the drawing board. But that doesn't mean they're not determined to find the killer, however long it takes.