Pop star Justin Bieber will make his small-screen acting debut on CSI on September 23, and after watching the promo, we're dying to see what happens on the show!

CSI executive producer Carol Mendelsohn told MTV News that Bieber's character Jason McCann is "a troubled young man, raised in the foster-care system, whose hard-luck life has left him scarred and angry. At the end of the episode, we're left with the question: Is Jason a good kid stuck in a bad situation or is Jason a bad kid hiding behind his cuteness? You can see why Justin was such a perfect choice to play this role ... It's an explosive story."

Can't wait!