How many movies have Barbara Steele and David Dietrich acted in together?

They have worked on 1 movie together! Their first movie together was The Boneyard Collection (2008) and was their highest rated movie together. They have not worked together since The Boneyard Collection (2008).

Role
Vanessa Peabody (segment "Her Morbid Desires")
Role
'The Long Disease' Writer (segment "Cry of the Mummy")