Where did Justin Bieber's black eye come from?

Did an argument with a bouncer go to far? Did he take a spill from his trailer? Did a fan go AWOL?

It turns out the pictures of Justin Bieber with a black eye are just stage make-up for a reprisal of his role as Jason McCann on CSI.  We know Justin's a prankster, but he definitely got us there for a minute!

Still, we're definitely stoked to see Justin on the small screen again, and we're hoping this episode will tie up all the loose ends from JB's last appearance! If you missed out, catch the whole first eppie on CBS.com.