If he’s found dead, or never found at all (rare), I don’t believe there will ever be full closure. We won’t know exactly what happened in Teton. Supporters of GP will claim certain things—namely he killed her. Supporters of BL might say … oh, he was depressed because they broke up and decided to go their separate ways on the trip and just see each other later back in FL. Or, there was a big fight, and he left her in the park, but she was alive (is that a crime?). Or, lots of other scenarios. Ugh.