It's hghly doubtful Cody was killed by a falling tree. It makes no sense. None of the forensic evidence makes sense. How they found the body made no sense. How the Costa Rican authorities let no one else but themselves look at the crime scene makes no sense. How they found the body a couple days before the NAT Geo airing because some Ranger decided to take the weekend off the find the body made no sense ... especially when people were looking for Cody for 2 years. How is that theh only found a skull and two femers? How come there no other bones? How come Cody's gear looked surprisingly decent when it was out in the rain forest for two years? Money can always be placed at the scene. It's not hard to replace... when a $50K reward is given. 

This story is entirely too convenient. However, we have to let Roman grieve. His father wants it to be a natural death ... so be it. But it's more than obvious this is entirely shady. Remember, Costa Rica survives on tourism.