How Watson learned the trick
- Tahun: 1970
- Negara: Germany
- Genre: Mystery, Comedy, History
- Studio: Universität Bonn
- Kata kunci: amateur detective, detective story, based on short story, holmes/watson, detective with humor, detective comedy, sherlock holmes, bantering relationship
- Pengarah: Stefanie Hosenfeld
- Pelakon: Jan Krolikowski, Dorian Lummel
