
Your right about the evidence. There wont be any of Bum's at the body of his Dad's, but there will be... all around the site where he's buried. There will be plenty on the young girl's too, Bum even fell in because of Sangwoo.... Which i knew he would do. I just knew when bum was digging that hole... Sangwoo was going to do something to make him fall in. Also that guy they killed. In Bum frame of mind he hasn't even thought about the D.N.A he's left behind.
Also there's plenty of bums D.N.A at the house, Which he entered without permission. Even if Bum doesn't get in trouble for the Dad's (we don't really know what happened with him yet) was it murder? or self defense? did Sangwoo kill him? or Sangwoo's Mum? Nether way Bum's been involved in two murder's.... he's right in the Sh#t.

I'm almost convinced that the police will find something on Jieun's body leading them back to Bum and Sangwoo. Sangwoo totally has the upper hand here because he didn't kill her, even though he is at fault too and should go down with Bum. But, I've always known there were several reasons and ulterior motives for him in keeping Bum alive.

Exactly, Bum is the perfect scapegoat. Sangwoo's not stupid. You bet anything that Sangwoo is going to say and do anything to get himself in the clear, that includes setting up Bum. Like you said Sangwoo didn't actually kill Jieun, D.N.A is going to be allover her. What did Sangwoo do with the knife Bum used? Did they show it? (I'm not to sure, I can't remember if they showed it, I don't think they did. lol)
I can't help but think... That Sangwoo might try to frame Bum for everything!!!!!
And another thing what's this ceremony he's on about?????
I think there are crack's forming in Sangwoo, The question is when will he snap?