I really doubt that Kyron is alive. I think these are just two heartbroken parents in different stages of grief. I know that I could not accept that my child was gone until I absolutely had to. I would stubbornly hold onto hope. Dealing with a parent with a terminal illness, I clung to every shred of hope that I could, all logic aside. It was easier to try to have hope and believe things may turn out okay than to face that gaping maw of horror. There were times when my confidence slipped and I knew it was not going to be okay, then I went back to the easier place of trying to hold on to hope again. My relatives and I all went through similar feelings, all at different times.
I imagine losing a child like this is very similar. And, I bet it feels good and right to speak to Kyron the way Kaine did, even if he knows subconsciously that Kyron is no longer with us - he still feels that Kyron can hear him.
The thing is, the logistics do not point to Kyron being hidden for so long. Dede and TH have been watched, likely surveilled every step of the way, for a long time now. So, we know it is unlikely that they are holding him somewhere without help and it's unlikely they are in contact with a third party who is holding him. Then, there is the issue of a third party. Once you start adding more people to the mix, it become much more likely that someone will talk or slip up. That's why I tend to doubt conspiracies.
Moreover, where does one hold a kid for so long without some sign of it? It happens but it is extremely rare for such a thing to go on unnoticed.
Also, the person caring for Kyron needs to work, to be able to provide for him, etc. Which makes stashing him even harder.
Finally, there's TH. The clues point to an imbalanced and vicious person who saw Kyron as the object of her misery and who saw killing him as the way to be free. "Kyron was there, he was a part of it and saw everything", or however Desiree said it, I didn't view this quote as signs of some cult activity or anything more complex than a little boy who obeyed the woman who helped raise him, who trustingly kept quiet and went along with whatever plan she had to get him out of the school unnoticed and who calmly got out of the car and walked into the woods to see whatever TH told him would be there, only to find himself strangled to death, or clobbered over the head and left to rot.
I cannot imagine the pain this family will go through for the rest of their lives. It's so evil, so senseless, so unnecessary. But I also think it's very simple, what happened to Kyron - the same thing that happens to too many lovely children at the hands of their parents or their parents' new guy or new girl. :twocents: