Murder by Decree
- Joer: 1979
- Land: Canada, United Kingdom
- Genre: Crime, Mystery, Thriller
- Studio: Canadian Film Development Corporation, Famous Players, Highlight
- Schlësselwuert: jack the ripper, sherlock holmes
- Direkter: Bob Clark
- Besetzung: Christopher Plummer, James Mason, David Hemmings, Susan Clark, Anthony Quayle, John Gielgud