Sure but just because DN is the only person WS allows to be sleuthed in no way insinuates his guilt.
This is a fascinating case but we don't have enough details to do much more than guess at what might've occured.
There are many things about DN that do insinuate he might be guilty. More than guessing, some of us try to take facts, coincidences and logic and try to figure out how it might all fit. It's not ridiculous. I find many of those on here to be quite thoughtful and thought provoking in their posts.