What makes a good mystery setting? Plenty of examples surround us, even when we don't see them. Take a foggy day. As you sit at the window a strange man dressed in a black overcoat, wearing sunglasses and a black hat walks by, and a thousand questions fly through your head. Who is he? What is he doing? Where is he going? Another example comes from a video game about dogfighting. On the mission, your job is to escort three aircraft carriers through a pass. Then, the enemy attacks, and its a foggy day, where you cant see more than 20 feet in front.That just yells at me, "Mystery!", and I might be assuming too much, but when someone attacks you or your crew, on a foggy day, something isn't right. I guess that I'm just trying to say that you want mysteries, you don't have to go far to get them. Just be vigilant and you'll be a sherlock holmes in no time.