How many movies have Heikki Kossi and Joanna Haartti collaborated on?

They have worked on 3 movies together! Their first movie together was Silence (2011) while their highest rated movie together was The Happiest Day in the Life of Olli Mäki (2016). They have not worked together since The Happiest Day in the Life of Olli Mäki (2016). They are most known for their drama films together.