Der letzte Zeuge is a German crime television series set in Berlin. Created by Gregor Edelmann, it aired on ZDF from 1998 to 2007 and was mostly directed by Bernhard Stephan. It stars Ulrich Mühe as medical examiner Dr Robert Kolmaar, along with Gesine Cukrowski as his colleague Dr Judith Sommer and Jörg Gudzuhn as police officer Johannes "Joe" Hoffer.