I've trotted out this sad "photo lineup" too often; almost everybody already has seen it, I'm sure. The photo on the far left was KAK and his dad at Hoover Dam, near Las Vegas. My belief is that it's KAK around the time of the murders. The middle picture says 2018 and is TK's pathetic attempt at providing an alibi for his son ("not here in 2 years" would be "wasn't here when those poor girls were killed, noooooo, not a bit.") And then the right is the well-known booking photo.
I've seen another photo that is supposedly KAK, taking a mirror-selfie, dressed in red; I'm not actually sure where that came from or if it's really KAK so I haven't included it in my ruminations.
KAK is visibly shorter than his father, and his dad looks to be around 6' or a bit under, just to my own eye. I think that Hoover Dam photo shows a young man about 5'9"-10" and around 180-190 pounds, though that is just my own personal estimate. I think KAK looks very much like he *could be* the murderer on the bridge, BG, physically. Opinions on this differ widely. (I also think he has the thin legs / bulky torso body profile that I see in the BG video; opinions also differ on that.
I've been saying that KAK *could* be BG physicially, that he's a good match in that Hoover Dam photo, the one nearest the murders. But I've added that I didn't think he was the actual murderer--just that based on the photos, he *could have been* the person in the bridge video.
With all the other items that cast suspicion on KAK (I outlined in the first msg and many of the points have been stated by others as well), I'm now thinking that KAK looks like he really might be the killer. MHO but there's a lot of reason to suspect KAK. Others don't agree with this part, but I don't see any actual evidence of involvement by anybody else; just suspicions with no evidence supporting it. So my own opinion is that KAK is that the best and only candidate so far, based on what little we actually know.