I love mystery quilts. I usually teach a mystery class, every year, at our quilt guild. They all seem to like it as we have some neat quilts turn up at show and tell. Try it, I think you will have fun with it. I know its kind of scary to do the first one. Maybe buy some sale fabric or use stash for the first so there won't be such an investment in fabric. (just in case you don't like the pattern after its done)