Two years ago I did my first Murder Mystery Party. I got the Homicide on Halloween at the Chamber of Screams Haunted House from My Mystery Party. It was much cheaper than some of the others listed. I believe it was around $40. I liked it because it was Halloween themed and was very easy to follow. I actually didn't participate because I thought I shouldn't so I could make sure everything went according to plan. However, I could have very easily participated and it still would have went smoothly.
