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The Grim Adventures of Billy and Mandy
Season 4 · Episode 7
The Secret Decoder Ring
0.0April 15, 2005
An acquaintance from Grim’s past attempts to entice Endsville’s children to free her from an ancient high school curse.
Episodes
- Episode 1The Secret Snake Club
- Episode 2He's Not Dead, He's My Mascot
- Episode 3Hog Wild
- Episode 4The Bad News Ghouls
- Episode 5The House of No Tomorrow
- Episode 6Happy Huggy Stuffy Bears
- Episode 7The Secret Decoder Ring
- Episode 8Wild Parts
- Episode 9The Problem with Billy
- Episode 10Wishbones
- Episode 11Dream Mutt
- Episode 12Scythe for Sale
- Episode 13Jeffy's Web
- Episode 14Irwin Gets a Clue
- Episode 15Duck!
- Episode 16Aren't You Chupacabra to See Me?
- Episode 17Zip Your Fly
- Episode 18Puddle Jumping
- Episode 19Runaway Pants
- Episode 20Scythe 2.0
- Episode 21The Firebird Sweet
- Episode 22The Bubble with Billy
- Episode 23Billy Idiot
- Episode 24Home of the Ancients