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

Wells: Just because something is theoretically impossible doesn't mean that it's not possible.
Bones: I believe that is exactly what it means.

Hodgins: I've loved combustion variables ever since I blew up the multipurpose room for my middle school science fair project. First time I made it onto a watch list.
Cam: Yeah, that's a lot less creepy.