Justin Bieber is making his prime-time acting debut on the season premiere of CBS’s CSI, as “a troubled teen who is faced with a terrible decision regarding his only brother.†While Bieber and CSI aren’t an obvious fit — Bieber’s demo consists of the daughters of CSI’s demo — it’s a way to raise his profile among adults, not a bad idea if the Bieb’s serious about this whole being-an-actor thing. The logic of this strange pairing explained, only one question remains: What will they do with his hair? [Deadline]