The Finder is introduced on Bones in the episode baring his name. "The Finder" introduces Walter Sherman and his cohorts.
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Booth and Brennan in a scene from the April 21, 2011 episode of Bones. "The Finder" will launch the spinoff for next fall, potentially.
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A sneak peek from the April 21, 2011 episode of Bones. The Everglades has come a callin' for Booth, Brennan and their new cohorts.
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A promo for the April 21, 2011 episode of Bones. The Finder is introduced in an episode baring his name!
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Bones Season 6 Episode 19 Quotes

I am the finder, you are the catchers.

Walter

...Except mine is real, not some magical finder power.

Brennan