How many movies have Seicho Matsumoto and Yo Takeyama collaborated on?

They have worked on 7 movies together! Their first movie together was Dots and Lines (2007) while their highest rated movie together was Giwaku (2009). They have not worked together since ドラマSP　松本清張「鬼畜」 (2017). They are most known for their mystery films together.