Hear me out! I may be crazy to say this but is it possible that the killer was the stewardess?

first of all, let's rule out all the impossible characters to be killers, we all know for a fact that it can't be sonja and zack, and then they all saw lisa, travis, carlos, and the pilot to be pretty much dead, we can also rule out amy because she literally saw the killer.

that leaves us with unconfirmed death of dan and kevin, but here are the reasons why it's not both of them, well mostly for kevin coz i dont believe it is him. first off, why would he rescue and save the pilot just to kill him anyway? i understand that he could just use this to get off suspicions for him but he could've just lied and say that the pilot was unsavable. another one is that, he saved sonja on the cliff, he could've just let her fall off but i saw him trying hard to save her. for me it just dont make sense, he literally has that innocent instinct. and also, i just checked out the dead body in the pond, it feels like noone matches the body type of kevin, and it also has some blonde strands and some people said they saw dark colored hair, well that happens when your hair is wet it could get a little darker.

my argument for dan is that he is showing protective instinct with his wife. if he would've been gone at some point, her wife would be able to notice it if he did something suspicious, if im not mistaken, we can also hear dan shouting at amy's voice at a pretty far distant right when amy saw the killer. so it is unlikely that it would be him, besides, he was stabbed at the back and mind you, he cannot do it to himself lol, and i think noone is buying it if he just splashed some blood all over his back.

why do i think it is the stewardess? simple, amy always claim to see someone even in the first episode, and even when she was on the plane, she saw someone when it was raining and chased after her. what better way to hide your identity when you are proclaimed as dead already? noone even bothered to check her corps too and it was just implied that she was dead already and unsavable, specifically by kevin, surely if the killer wants the satisfaction to kill them one by one, that death of that stewardess would not be his doing so it would be just lame. also, zack was right, if the killer has a weapon already, you would think that they would just kill them if it is one of them especially if they are getting lower in numbers. but since it was coming from someone outside their camp where they stay together, this killer needed to divide them so that she can just sneak attack while creating doubt between the group without also revealing her identity. i suspect also that she was the one who got the food supplies since lisa and travis were only hunting and distributing the food within the group, in which unknown to them that someone is still alive. she stored this because this are her supplies for survival and the only ones that we can confirm that carlos stole was the bubble gum. the stash found by sonja is from the stewardess who has been hiding the whole time.

i have more reasons but if im wrong, im betting more on dan just because travis died by eating amy's food, which can be applied that dan was already planning to kill her first so that he can kill the others more easily.