Wizard of Combat
I've been using Justin Alexander's Node-Based Scenario Design for over a decade and really enjoy it. It works great for mysteries. Or really just anything that's non-linear and also not 100% sandbox play. Just recently I started turning the larger nodes into 5-room dungeons rather than just scenes. either they're lying or the players enjoyed it. I know I definitely did. Especially when I stole 5RD's from other, more creative, GMs.