Bones - Season 3 Episode 1
The Widow's Son in the Windshield

After a skull smashes into the windshield of a teenagers car, the investigation reveals the skull has been gnawed on by human teeth, which implies cannibalism and marks the beginning of the Widows Son case. Meanwhile, Angela and Hodgins hire a private investigator to find her husband. Bones searches for Zachs replacement and the team gets a wonderful surprise.