Hyde and Shriek Punkin' Puss & Mushmouse : Season 1 Episode 22
Syndication 7m
Aired: November 3rd, 1964 @ 12:00 AM EST on Syndication
Mushmouse mixes a potion similar to Dr. Jekyl's formula, which turns him into a monstrous mouse. When Punkin' tries it, he unleashes a mean doppelganger of himself.
