How many movies have Hans Heinrich von Twardowski and Lionel Royce acted in together?

They have worked on 5 movies together! Their first movie together was I.N.R.I. – A Film of Humanity (1923) while their highest rated movie together was Once Upon a Honeymoon (1942). They have not worked together since Hitler's Madman (1943). They are most known for their drama films together.