Bones: Season 3, Episode 15

3 - 15: The Pain in the Heart

After Booth's "funeral" (which was in fact a covert operation, Booth being very much alive), a human jawbone shows up at the Jeffersonian, Brennan and the team quickly realize the Gormogon serial killer has struck again. In a shocking turn of events, an explosion in the lab sends Zack to the hospital; Gormogon's silver skeleton goes missing from the basement vault; and every Jeffersonian employee becomes a suspect, with the realization one of their own has been working with the twisted and elusive serial killer. The fiend isn't who they suspect; not even Cam, an ex-cop, can see the truth.