How many movies have Ann Muffly and Stephen King collaborated on?

They have worked on 2 movies together! Their first movie together was Knightriders (1981) while their highest rated movie together was Creepshow (1982). They have not worked together since Creepshow (1982).

Role
Lenora Castonmeyer (voice) (uncredited)
Crew
Screenplay
Role
Jordy Verrill (segment "The Lonesome Death Of Jordy Verrill")