The interview makes me think about what DNA evidence there is. KAK says he was swabbed, and this interview was in August of 2020. Swabbing him would either 1) prove or disprove that he committed the murders or 2) link a family member to the crime. Neither has happened yet. That leads me to believe that there was not too much DNA evidence to collect. The best way to make their case is to get someone to talk or get more witnesses.
Didn’t LE say, in the published transcript of this one interview (whether or not they were being truthful we do not know), that they didn’t think he (KAK) killed the girls? (Apologies, my search function isn’t working for a quick find - someone please correct me if I’m misremembering or provide the exact quote if you have it handy.)
What if the noted complexity of the case is that they DO have DNA, it just doesn’t match the most obvious likely suspect(s) - KAK or a family member. I’ve read through the entire transcript once and listened to the first half (so far) of it dramatized by the MS podcast, and for me it solidified that he’s not the one, but he’s unwittingly connected. Maybe I would feel differently if I could observe his body language and tone, I don’t know. Honestly, I suspect it’s the other person in/at the home using the accounts and devices that actually created and maintains the Dropbox in question, too.
In the MS podcast episode Kayla’s Story, K, who alleges that KAK met her at Foster Park - well, I think it’s telling that she says he was perfectly gentlemanly in person but became enraged and talked about slitting her throat *LATER* over text or whatever app. Like Jekyll and Hyde. Because perhaps it is literally not the same person. Maybe KAK is a pawn in someone else’s game.