How many movies have Jim Manzie and Robert Kurtzman collaborated on?

They have worked on 3 movies together! Their first movie together was Leatherface: The Texas Chainsaw Massacre III (1990) while their highest rated movie together was Tales from the Darkside: The Movie (1990). They have not worked together since Pumpkinhead II: Blood Wings (1995). They are most known for their thriller films together.