Touch DNA and Retinal Scans

There's no defense wounds on any of the victims. I feel like touch DNA is something that is going to be bigger than what they can do right now. Touch DNA and minuscule pieces of fiber and skin cells and DNA are going to be able to be used eventually, you know, retinal scans. But I mean, God. And maybe could there be science in the future that somehow does a thing that none of us even understand just like how we didn't understand DNA in 1966? Absolutely.