Hi Team Colin. I'm still here ... I try to check this thread daily and I have been pondering the latest answers provided by Kadence. I'm definitely very curious about (1) Colin staying at the party after his close friends all left (would this be typical for him?) and (2) not having made any specific arrangements for a ride home (that anyone is owning up to anyway) ... especially since he supposedly told the one guy who stopped to offer him a ride twice that he was waiting for his ride. (Edited to add this paragraph) I'm just tossing out a random possibility (I mean no disrespect to Colin or the relationship he was in at the time) ... could Colin have been flirting, etc. with a girl at the party and made plans to go elsewhere with her after? That could've contributed to fighting. A part of me also keeps going back to his missing backpack - it almost suggests he actually did get a ride with someone. Or if it was left in one of his friends' cars, why on earth would they conceal that? Did it hold anything of value that someone would steal it? It just strikes me as odd that it never turned up. Besides the super-odd fact that an ENTIRE person went missing.