Bones' promo for the February 4, 2013 episode, "The Doll in the Derby." There's a roller derby murder mystery in the works.
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Bones Season 8 Quotes

Starling: Why'd she call you doctor?
Sweets: Because I'm a doctor. I'm a psychologist, a profiler.
Starling: You've gotta be kidding me. I'm working with a shrink.
Sweets: I'm more than just a shrink. The bureau gave me a gun. I should take the lead on questioning people. It's kind of my thing.
Starling: Just don't shoot me.

Angela: It was the coolest trick ever.
Hodgins: It was no trick. It's a simple matter of chemistry and physics.