I LOVED this place! Theresa and Taylor were both awesome, nice, friendly, and very helpful - thanks guys. :]
Honestly, this place was the highlight of my Vegas trip and my friend felt the same. We decided to go try it out on a whim, and I'm so glad we did because we had a great time! The Sherlock room was definitely difficult, but the workers will offer you 3 clues. You can call in and ask after the first ten minutes, or they will start to call you at the 30 minute mark and ask about your progress.
Only tip I have to enhance the game is this: I wish the map thing had an indicator that showed when you put the marker on the right area, (I am being intentionally vague so as to not give anything away). We honestly had no idea if we had it right, or if our thought process was even right. I think installing a small light above or near each map that goes off with the respective color would be super helpful.
If you are in Vegas and you like clue rooms, then definitely check this place out! It's a blast. :]