But there are signs when people are open to possibility. Scott Peterson had friends who knew that he wasn't happy - he didn't hide it. I suspect Young, Watt, Harris, etc. all shared their feelings with someone. Doesn't take much - I used catch a fast food lunch with a co-worker, on occasion, and wouldn't have been the least bit surprised if he did something like this - but no one else saw it.
I guess what I'm saying, in this case, is if it turns out like it seems, there will be a buddy, somewhere, who will paint a picture that no one else wanted to see.