User blog comment:AltertheSilverBird/Total Drama: Danganronpa Chapter 8: Class Trial/@comment-25106086-20160920142609

Based on this, much as I hate to say it, the killer has to be Geoff. He and Bridgette were the only ones stationed at the beach, but Bridgette was found passed out in the cabin, perhaps due to her injury or something Geoff did. Not only that, Geoff's one of the few people that blonde hair could've come from. It has to be him...