It's Friday the 13th, and you and a group of 7 friends from the "Survivor" club belonging to University LeMao (A, B, C, D, E, F, and G) go camping.
You're all pretty good friends, and talk quite a bit during their hike up the Mountain named Nuffingwrong. As the talk continues, A gets into an argument with E. B, being A's best friend decides to help out A, only to have F step in and make things worse - F decides to help E (They're best friends, after all). For the next 5 minutes, a constant yelling and screaming pierces your ears. Reluctant to get involved, you take G and head off to find a camping spot. The last thing you hear from that area are the words "I'm gonna kill you, I swear it!" from one of the 4 people arguing, followed by C and D stepping in to stop the fight.
After you find a good spot, you and G head back to rendezvous with the group, and tell them about the great spot you guys picked out. The fight seems to be over, everyone seems to be good friends again, and the night seems cheerful.
As the sun sets, the group heads out to the spot you picked to set up camp, and split up the jobs.
A and B go to get firewood.
C and D are tasked with setting up the tents.
E and F are sent to go get some vegetation (berries and/or fruit) for the nights dinner.
You and G end up with the task of sharpening sticks and going to hunt for small critters to cook.
15 minutes pass since everyone has split off to do their jobs. G mentions to you that he needs to go to the washroom, and heads off into the forest. He comes back a couple minutes later, and the two of you continue with your job. For the next half hour, everything seems calm and serene; you and G are having a great time talking while sharpening sticks, discussing how to properly throw them and what the best form for javelin throwing is, when all of a sudden, two bloodcurdling screams resonate from the direction of the campsite.
The two of you try to rush back to the campsite. You follow as G leads, but you both end up getting lost along the way, and don't arrive at the campsite for another 20 minutes. You find that most of the group is already there, waiting for you. Looking around, you notice that E and F's hands are stained with red liquid, C and D are lying face down on the floor, and B is in a pool of blood - a quick look tells you that he is dead. "Where's A", you ask. Nobody knows - everyone instantly rushes back into the forest to look for him, and it doesn't take long before you find him face down in a river - lifeless.
You all head back to camp, and check on C and D. Touching the back of their heads, you notice that your hands are wet and have become stained with red. You gently wake them up, and it seems that they're alright. C and D tell you that they were knocked out by something - You fill them in on what has happened so far, and start the investigation.
Here's what you know about the members of this social group:
A and B are your average Joe's - they're not particularly weak or strong. They're prone to arguments, but they're also very hard working people. They also work a lot better individually.
A has OCD and can't stand things being messy.
C and D are best friends, and are big time geniuses. Like, 140 IQ type genius. They hate conflict, and they're perpetually scared of everything - fortunately for them, their high IQ leads them to preemptively prevent conflict very often - one thing they've done is jack up their bodies by going to the gym a lot.
E and F are nerdy environmental studies majors - they pretty much can't lift more than their backpacks, and they're nature lovers like no other.
G is a loner - he's prone to violence, and gets upset at the weirdest things. The group pretty much consists of all his friends.
Checking the area, you notice the following things:
There's a pile of firewood at the campsite, piled extremely neatly, but missing the top piece of the triangle.
The fire hasn't been started yet.
There are some crushed berries near B's body
There are no major signs of struggle at the campsite (No scuffle marks, etc).
The tents have been set up.
You manage to find what seems to be the murder weapon regarding B's murder: A single log (firewood size) with red on the bark. It seems to be blood. It seems to fit perfectly on the top of the pile of firewood previously mentioned.
You do some questioning for each member of the group in order to see if you can find out the truth. Here's what you manage to divine from each person:
A: N/A - he's dead, but you notice an EpiPen when you search his clothing - it seems that he's extremely allergic to raspberries.
B: N/A - he's dead, but upon investigation of his body you notice that the blood loss mainly resulted from a heavy blow to the head. There's firewood under his body, suggesting that he was carrying it at the time of death and fell on top of it after getting hit.
C & D: "We don't know what happened - we were knocked out by someone, and after you woke us up, we've been with you the whole time." You point out that C's hands are red. "That's cus we were eating the berries E and F brought back." You mention that only one of them has stained hands - to which they tell you secretly that they're a couple and that C was feeding D. No one in the group knows about this, and they ask you to keep it a secret.
E & F: "We were out collecting berries - we've made several drops off over there" (They point to a pile of berries in a bucket) "And when we got back from our 3rd round, we saw B lying there, dead. We didn't know what to do, so we screamed!"
G: "I've been with you the whole time. I'll show you where I went to piss if you want..."
Q: What happened that night? Who is/are the killer(s)?
Hints to be posted later - if needed.
Question: Were E and F together the whole time? Answer: Yes.
EDIT MADE: I changed the wording for the section where you run back to camp with G, for clarity!
Because way too many people are falling for this red herring;
G did not kill B - he doesn't know the way back to camp! If he tried he would never have made it there and back, and pissed, all within 5 minutes. Also, he has no motive.
Because Duncan has the right idea:
B was in fact the person to scream "I'm gonna kill you, I swear it" from the argument.
Because people are giving up - don't give up! Here's a hint!
E and F traveled to a single bush area for berries.