How many movies have Barbara Niven and Cameron Mathison acted in together?

They have worked on 8 movies together! Their first movie together was Murder, She Baked: A Chocolate Chip Cookie Mystery (2015) while their highest rated movie together was A Zest For Death: A Hannah Swensen Mystery (2023). They have not worked together since A Zest For Death: A Hannah Swensen Mystery (2023). They are most known for their mystery films together.