How many movies have Ione Rolnick and William Kerwin acted in together?

They have worked on 1 movie together! Their first movie together was Suburban Roulette (1968) and was their highest rated movie together. They have not worked together since Suburban Roulette (1968).

Role
Fran Conley
Role
Marty Conley (as Thomas Wood)
Crew
Production Manager