Happy Days - Season 6 - Eps 8: Fearless Malph
Richie is writing a story about fears and phobias, and he finds out that Ralph is afraid of nearly everything. While Richie, Potsie, and Ralph are visiting a professor whose specialty is fear, lab mice become agitated. The professor concludes that it is a sign that a tornado is coming.
About Happy Days

Title: Happy Days
First Air Date: 1974-01-15
Last Air Date: 1984-09-24
Status: Ended
Rating: 7.7/10 (from 274 votes)
Language: EN
Seasons: 12
Total Episodes: 252
Network: ABC
Genres: Comedy
Production Companies: Miller-Milkis Productions
Synopsis
In 1950s Milwaukee the Cunningham family must contend with Fonzie, a motorcycle riding Casanova.
Cast

Henry Winkler
Arthur Fonzarelli

Tom Bosley
Howard Cunningham

Marion Ross
Marion Cunningham

Anson Williams
Potsie Weber

Scott Baio
Chachi Arcola

Ted McGinley
Roger Phillips

Erin Moran
Joanie Cunningham