Justin Bieber played a troubled teen in two episodes of CSI. He met with a violent end after a stand-off with police. Now we may know why.

In an interview with French radio show Le Grand Direct des Medias last Friday (via NYDN), Marg Helgenberger (Catherine Willows) said, “I probably shouldn’t say this, but he was kind of a brat.” She explained the Biebs was nice to her in the one scene they shared but was horrible to the rest of the crew.

“He locked one of the producers in a closet,” she recounted. “And he put his fist through a cake that was on the craft services table.” What a tough guy. Grr!

Justin Bieber apologists will argue he was merely staying in character. On the other hand, Justin Bieber apologists include 12-year-old girls who, at that age, are more irrational than the normal woman and can only communicate through high-pitched shrieks. Point is, their opinions are worthless. So to answer your question, yes, fame has gotten to Bieber’s head.

Granted, if an androgynous 16-year-old locks you in a closet, you deserve it for being a pansy. What didn’t deserve anything though was that cake. It was probably delicious. What an asshole.

On CSI. Last night marked the last time Justin Bieber’s character appeared on CBS’s CSI. That’s because they shot him to death. Considering CBS’s viewership consists of the 40+ crowd, he won’t be missed.

Granted, it’s a little bittersweet because they’ll miss out on his great acting. Like the part where he was getting lit up but kept convulsing even after the gunfire stopped. He must have never said never to overacting. A drama queen even in death.

While filming another guest appearance for CSI on January 12, Justin Bieber was taken to Providence St. Joseph’s Hospital in Burbank for an allergic reaction just as production began to wrap at 7 PM.

“He was having trouble breathing due to an allergic reaction,” a source close to the pop singer explains. “His doctor met him there. He stayed at the hospital about 30 minutes and was discharged.”

Geez, guys. Canada almost lost their national treasure. We should find out what caused this and plant it in keep it away from his food. We wouldn’t want Justin to fall to the ground, squirming around in anaphylactic shock no matter how hilarious and YouTube appropriate it is. Right? Wink wink, nudge nudge, hint hint.

Justin Bieber filmed one episode of CSI and is set to film a second one due in February that will continue his character’s storyline. The first ep airs in September.

In his acting debut, Bieber plays Jason McCann, a troubled teen in a dysfunctional, anti-government family. He has a foster dad in prison and a brother bent on revenge against the police. So where does that leave Bieber’s character? “Is he a good kid stuck in a bad situation or is he a bad kid hiding behind the cutes?” Mendelsohn says. “He’s caught in the middle.”

That’s Bieber on set of CSI face to face with a fake corpse doing his best scared lesbian impression. It was pretty good but when I complimented him all he did was look at me confused and say, “what impression?”

Kevin Federline finally makes his acting debut on CSI and it’s a sweet one. I don’t want to spoil it for you, but I will. Kevin Federline gets punched in the gut. This is almost as satisfying as Paris Hilton being punched in the face. The only problem is it’s fake, but Kevin Federline should take this to heart. The only reason he will ever asked to be on tv is to serve as a human punching bag.