Justin Bieber helps CSI ratings stay afloat

Back in the hey-days, "CSI: Crime Scene Investigation" could absorb more than 20 million viewers at its season premieres. But since its spin-offs have taken over and several original and beloved cast have departed, the show has been experiencing a declining rating that not even singing phenomenon Justin Bieber could lift.

Heavily promoted, Bieber's first foray into acting on the show could only