Justin Bieber to be first fetus to guest star on CSI.

Meet CSI: Crime Scene Investigation‘s latest guest star — Justin Bieber.

The hair-flipping, Canadian pop sensation will make his acting debut on the CBS hit, following in the footsteps of Taylor Swift, who called her guest stint on the show “life-changing.”

The 16-year-old will play “a troubled teen who is faced with a terrible decision regarding his only brother — a decision that leads him into an explosive confrontation” with the crime scene investigators, the show’s producers said in a statement on the show’s Web site.

And the best part for Bieber fans? It’s just the beginning. Producers said the episode is the start of “an emotional story that will conclude later in the season.”

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