John Walsh presents various theories regarding the mystery of "Who Shot Mr. Burns?"
| Actor | Role |
|---|---|
 John WalshSelf | Self |
 Dennis FranzSelf | Self |
 Andrew ShueSelf | Self |
 Courtney Thorne-SmithSelf | Self |
 Kevin NealonSelf | Self |
 Chris ElliottSelf | Self |
 Daryl GatesSelf | Self |
| JJimmy VaccaroSelf | Self |
| EElizabeth HayesDr. Lydia Hansen | Dr. Lydia Hansen |
 David BurrPolice Detective (Uncredited) | Police Detective (Uncredited) |
 Hank AzariaPolice Chief Wiggum (Uncredited) | Police Chief Wiggum (Uncredited) |