Thanks! It's horrifying to think of what it contains - I'm still haunted by reading the Bittaker/Norris transcripts, and I suspect this may be along those same lines.
JMO but often times these murderers are into the fear/control/power aspect - it's a major part of the thrill. I think people are jumping ahead to sex offenders too quickly.
It worries me that perhaps two friends were chosen deliberately to maximize the victims fear and thus the murderers excitement (e.g., murder one and observe the fear in the next). Bittaker and Norris I recall specifically enjoyed observing the fear in their victims.
Anyhow, seems reasonable to think a gun is involved (hard to imagine how else you'd control 2 people, and I can't unsee the outline in the photo!), but there's very little reason to suspect one was used in the killing -- too risky with the gunshot sound and nearby properties. Which leads me to believe killer(s) had a preferred method of killing silently, perhaps strangulation, drowning, or a knife. LE didn't seem to immediately know whether the crime was a homicide however, and mentioned they suspected it only based on how the bodies were found.
We should be careful about assuming this is a sex-related murder by a pedophile(s). I know it seems obvious given the gender and age of the victims, and statically I'd think it likely, but as of yet there is no evidence and no indication by LE. And given how confused they seem about this case, I have to wonder if the lack of apparent motive is why.