Cast and credits of The Boy Who Knew Too Much

Dan Castellaneta
Homer Simpson / Huck Finn / Freddy Quimby / Hobo / Ticket Booth Operator / Man at Auction / Mayor Quimby / Scott Christian / Lawyer /

Julie Kavner
Marge Simpson / Patty Bouvier (voice)

Nancy Cartwright
Bart Simpson (voice)

Yeardley Smith
Lisa Simpson (voice)

Hank Azaria
Moe Szyslak / Auctioneer / Chief Wiggum / Mr. LaCoste / Apu Nahasapeemapetilon / Chief / Free Willy Father (voice)

Harry Shearer
Otto / Lincoln / Principal Skinner / Rainier Wolfcastle / Kent Brockman / Dr. Hibbert / Jasper / Ned Flanders (voice)

Phil Hartman
Lionel Hutz (voice)

Marcia Wallace
Edna Krabappel (voice)

Pamela Hayden
Milhouse Van Houten / Judge / Jimbo Jr. / Billy (voice)

Maggie Roswell
Escort / Jury Member / Helen Lovejoy / Free Willy Mother (voice)

Russi Taylor
Martin Prince (voice)