User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-75.30.234.21-20130604211646

Watch Grunkle Stan closely throughout Carpet Diem. When they are in the room he acts like he doesn't know anything about it but he looks nervous. He also grabs the glasses and tells Mabel the carpet is horrible. Does he know about its body-swapping properties? I say yes. When he was polishing the glasses thoughtfully he heard people shouting 'Give me my body back!' and didn't think anything of it. Also watch him closely in the penultimate scene when he is taking the carpet out of Dipper's room. He looks so nervous and bites his lip and looks away a lot. I think he knows something that he's not letting on.