Something to ponder about Sleepaway Camp*spoilers*

[Pip]

First and foremost Sleepaway Camp is one of my favorite movies. Throughout the movie it kept me guessing who was the killer and even after the movie. It also has a great twist ending. Now, we all know Angela killed Paul at the end but did Ricky have a share in the murders? Consider these points:

When Paul meets Angela outside at one point in the movie Angela says "I thought you were the killer." At this point I don't believe Angela had killed any of the campers.

Motzart pulled a knife out on Ricky which was taken away by Chino. Chino then put it under his clothes in view of Ricky. A couple of minutes later that knife is used to cut the mesh in the bathroom. Later on in the movie when Meg is killed in the shower we see that same knife. How could Angela get ahold of this knife?

When Judy is killed we see a silloette(I know I spelt it wrong) of a person that is clearly not Angela. Te only other character that fits the silloette of the person seen is Ricky.

Anyways I now I sound like a loser leting out all those observations but I wanted to know if anyone else thought the same way.