Ein Fall für zwei is a German television series, which premiered on September 11, 1981 on ZDF. The series, located in Frankfurt am Main, features two main characters who solve crimes: a defense attorney and a private investigator. Josef Matula, a former German police officer, has gone into private business. His method of investigation is very effective and direct, and he sometimes even resorts to dirty tricks. Claus Theo Gärtner has portrayed the role since the start of the series.