S2·E29 Hyde & Shriek
Aired December 18, 1965
Synopsis
Mushmouse decides to read the story of Dr. Jekyll and Mr. Hyde and gets the idea for a potion that will turn him into an alter ego. This works for a while, but when Punkin’ Puss discovers what he’s doing, he decides to try the rest of the potion and soon discovers that his worst side wants to fight everyone in sight.