Bones: Season 4, Episode 14

4 - 14: The Hero in the Hold

The evidence from the Gravedigger case has gone missing. Brennan and Hodgins, who have not fully recovered from being buried alive, are suspected of taking it. On the night of a ceremony recognizing Brennan, Booth was knocked out, tasered, pumped full of drugs, and stuffed in a toy-like yellow submarine. When he gets out of the tiny submarine, Booth finds himself face to face with someone from his military past. The team works on locating Booth and finding who is behind the kidnapping, with the help of Booth's brother Jared. Agent Perrota also appears.