Justin Bieber is getting back into character….

The pop sensation tweeted a pic of himself yesterday (Dec. 11)  with a black eye on the set of “CSI”.

“On set … where? Let’s just say I’m back to my evil ways. #badass,” he tweeted.

JB will be reprising his role as a boy named Jason McCann who knows more than he’s telling about a serial bomber. The episode is titled “Targets of Obsessions” and will air on February 17th.

Check out a clip below from Bieber’s first CSI appearance (that aired last fall) below….

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