Graham Miller

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 goes 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.

A teenage boy, who died in a freak accident after learning he was adopted, seeks Melinda's help in finding his birth mother.

After a jetliner crashes Melinda faces the overwhelming task of helping hundreds of passengers crossover.

As Valentine's Day approaches, Ryan worries that the pressure of the holiday will ruin his relationship with Taylor. Meanwhile, revelations from their pasts cause Summer and Seth to question whether or not they are destined to be together.

When Detective Bailey's sister, Jess (guest star ALISHA WAINWRIGHT), runs into trouble with the law, Bailey must decide how far she's willing to go to protect her family. Meanwhile, with Trish away on a company retreat, Murtaugh is left to help Riana navigate boy problems, and Riggs deals with the fallout of a night of heavy drinking.