How many movies have Martijn van Nellestijn and Martine van Os collaborated on?

They have worked on 3 movies together! Their first movie together was Sinterklaas en de Verdwenen Pakjesboot (2009) and was their highest rated movie together. They have not worked together since Sinterklaas en het raadsel van 5 december (2011). They are most known for their family films together.