How many movies have Ingvar Hirdwall and Klas Engström collaborated on?

They have worked on 9 movies together! Their first movie together was Beck 03 - White Nights (1998) while their highest rated movie together was Beck 08 - Trails in Darkness (1998). They have not worked together since Beck 15 - The Boy in the Glass Ball (2002). They are most known for their mystery films together.