TL;DR Charlie is almost certainly a killer, there is more than one killer for sure and i think that Atticus is the second killer
I found this little secret diolouge between Avery and MC after Elise doed and Avery mentions how the camera feed is live but no one had been watching it when it had happened. Apparently Charlie was supposed to be watching but he was off doing something else which then leads Avery to thinking you were doing some stuff with him. Clearly though, you're just snoozin', meaning he was off doing something.
This is getting a bit out there but his friendship bar starts at 50% while everyone else starts i think around 30% meaning he must've known you before..? My theory (and yes its VERY out there) is that there are two Villa Killas.
First, Charlie as one; the whole thing was sketchy, Avery dosent even know why there are only two producers on the whole island. Charlie must've set this up, he plays stupid fun Hawaiian shirt guy but hes actually super weird and set the whole thing up
Second, Atticus; you're on a dating show and you dont even want to try and be open. Bro isn't playing the 'hard to get game' hes playing a whole other game that involves the lives of others. He arrives late (which is weird because they cant get off the island so how would they arrive in the middle of the night???) and if everyone finds out its a murder, they wouldn't think jts him and Rowan because they arrived "after" the death or Elise.
SUPER SUSPICIOUS RIGHT?? Logical you know that there has ti be at keast two killers (they could all be killers for all i know) but there has to be more than one because we know that they die via a voting system. If the killer gets voted, itd be weird if they just killed themselves.
Another thing, (i dont remember for atticus's answer, but) on the Tumblr page, there is a zombie apocalypse question; who would survive the longest? It was ranked from dies first/easily to dies last/its hard for them to get killed. I know for a fact that Charlie's was wayy closer to easily surviving than you'd think for him being described as a starwars twink with a camera.
(P.s. If you select a lawyer in the beginning he asks you if you could could be his lawyer and if you ask him about it he doesn't really follow up)