How many movies have David S. Sterling and Sally Mullins collaborated on?

They have worked on 7 movies together! Their first movie together was Curse of Pirate Death (2006) while their highest rated movie together was Blood Mask: the Possession of Nicole Lameroux (2007). They have not worked together since Axegrinder 5: Blood Vengeance (2022). They are most known for their horror films together.