How many movies have Guttorm Petterson and Kathrine Fagerland collaborated on?

They have worked on 4 movies together! Their first movie together was Varg Veum - Bitter Flowers (2007) while their highest rated movie together was Varg Veum - Sleeping Beauty (2008). They have not worked together since Varg Veum - Woman in the Fridge (2008). They are most known for their thriller films together.