Bones: The Pain in the Heart

When a human jawbone shows up at the Jeffersonian, Brennan and the team quickly realize that the Gormogon serial killer has struck again. In a shocking turn of events, an explosion in the lab sends Zack to the hospital, and it is discovered that Gormogon's silver skeleton is missing from the basement vault. Every Jeffersonian employee soon becomes a suspect, with the very real possibility that one of their very own may be working as an apprentice to the twisted and elusive serial killer. When the team figures out its Zack, he helps them catch the Gormogon but is sent to a psychiatric institute for his involvement in the killings.