The 13 year old question... answered!

[ScreamKing]

Some guy on Twitter asked Kevin:

@kevwilliamson -- This bugs me, who killed Casey Becker? Billy or Stu?

Kevin replys with:

@Jamie_M39 -- Stu.

Interesting. Though I kinda figured, but good to know for sure.

[JohnStone1987]

It's easy enough to figure it out on your own

[Maloney]

i always thought it was billy, because as tatum says "Stu was with me last night" and i figured billy killed casey then went straight to sidneys

[JohnStone1987]

It would make perfect sense for stu to have killed her after all she dumped him for steve

That^.

[Devils_Reject]

Always knew it was Stu, Billy didn't have much of a reason to do it.

[cj13]

Kevin Should Make A List Of Who Killed Who In Each Film (Except 3 Because 1 Killer Haha)

[ScreamKing]

I always thought it was both of them though. Lol, like I thought both were dressed as Ghostface.

[Devils_Reject]

Both of them were there, I think Billy took care of Steve but Stu did Casey.

[Gotensive]

It seems a bit strange to me the way Williamson responded. He gave it away too easily, without any explaination. Was that really him?

[Devils_Reject]

It's def Kevin Williamson on Twitter, there's not much character space on the Twitter which is probably why he just responded so quickly.

[Ghostface_Craven]

It obvious had to be Stu that killed Casey due to the motive.

That is definitely Kevin's twitter page. Like someone said earlier there's not a lot of room. Plus he figured the fans already knew the motive behind it. At least that would be my reasoning.

[Deputy Dewey]

Wikipedia gives out the names of the people who killed in each movie...

[Maloney]

Wikipedia gives out the names of the people who killed in each movie...

Wikipedia isn't always 100% correct, people who have different opinions can edit it of what they think.

[Ghostface_Craven]

Wikipedia gives out the names of the people who killed in each movie...

Wikipedia isn't always 100% correct, people who have different opinions can edit it of what they think.

Very true. Wikipedia can become quite opinionated on some things.

[hellosidney]

I always thought it was Billy... because Tatum says that Stu was with her (pretty much what someone already said up there ^)

Well this changes everything...