- Seth MacFarlane (Stan Smith / Roger (voice))
- Wendy Schaal (Francine Smith (voice))
- Rachael MacFarlane (Hayley Smith (voice))
- Scott Grimes (Steve Smith (voice))
- Dee Bradley Baker (Klaus (voice))
American Dad! — S3E13
Episode: Black Mystery Month
Air Date: 2007-02-18
Runtime: 22 min
Overview
While researching a paper about George Washington Carver in celebration of Black History Month, Steve uncovers a conspiracy that's been going on since the Civil War. When the curator of the Smithsonian Peanut Museum reaches out to tell Steve the truth, he's mysteriously murdered, and Steve and Stan are tracked by a secret society that will stop at nothing to keep this scandalous secret of American history.