How many movies have Richard Langin and Thomas S. Allan collaborated on?

They have worked on 3 movies together! Their first movie together was Die Anmacherinnen 9: Arschgeile Flittchen (1999) while their highest rated movie together was Gina Wild - Jetzt wird es schmutzig 5 (2000). They have not worked together since Gina Wild - Jetzt wird es schmutzig 5 (2000).