Bones returns Monday with a double shot of Booth and Brennan. Back-to-back episodes, "The Diamond in the Rough" and "The Archaeologist in the Cocoon" kick off the Fox show's 2013 run.

In the first hour, Sweets suggests Booth and Brennan go undercover as dance competitors to investigate the death of a professional ballroom dancer who was murdered prior to her audition.

Booth them tells Sweets he taught dance to put himself through college, at which point Sweets infers that he was a male prostitute. Not the case, however. He actually as a dance teacher.

When he teaches Brennan the Rumba, the dance of passion, she learns this first hand!

In "The Archaeologist in the Cocoon," we see Brennan attempt to teach Christine about object permanence by playing Peek-a-Boo, while she cites her expertise in dealing with an archaeologist's death.

Also, Brennan and Hodgins to debate the existence of a Mothman creature. Watch!

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