This whole thing is driving me bonkers. If KAK DIDN'T do it, he's not doing himself any favors with his behavior and double-talk. If he DID do it, he's also not doing himself any favors with his behavior and double-talk.
If it was me, no matter what I actually did, I'd want to make absolutely dang sure that everyone knew I wasn't the one who killed those girls. If I had an alibi, I'd alibi myself six ways to sunday. If it was my dad that did it, I'd send my dad to the slammer. If he KNOWS who did it, and he isn't giving that info up, now that's just dumb. Because no matter what he actually did do, he'd likely get some serious leniency for helping to solve this case.
If he's one of those morons that just want to inject themselves into the case, I have zero understanding of whatever disorder out there makes someone want to jeopardize their freedom and safety to look like they were involved in something as evil as murdering kids.