>A three-day search by foot, on four-wheel-drives and from the air ruled out death by misadventure. To date, the police have found no trace of Mr. Moriarty or his dog.

I'm kinda surprised that this ruled out something. Particularly in a rural area. I grew up in rural areas and there are often stories of massive searches, and the body didn't turn up until it was stumbled upon surprisingly close to civilization.