How many movies have Hanna Ketonen and Matti Mäntylä collaborated on?
They have worked on 1 movie together! Their first movie together was Natalia (1979) and was their highest rated movie together. They have not worked together since Natalia (1979).
They have worked on 1 movie together! Their first movie together was Natalia (1979) and was their highest rated movie together. They have not worked together since Natalia (1979).
