There's something about summer that makes people want to actually do something for their birthday rather than just book a restaurant table and call it a night. Maybe it's the long evenings, the fact that people are more likely to be in town, or simply the sense that summer demands to be celebrated properly. Whatever the reason, if you're looking for a birthday party format that's truly fun, surprisingly easy to pull off, and memorable enough to be talked about for years, a murder mystery dinner party deserves a serious look. Here's how to make it work.