Sherlock Holmes is drawn into the case of Jack the Ripper who is killing prostitutes in London's East End. Assisted by Dr. Watson, and using information provided by a renowned psychic, Robert Lees, Holmes finds that the murders may have its roots in a Royal indiscretion and that a cover-up is being managed by politicians at the highest level, all of whom happen to be Masons.
You can now watch Murder by Decree online on the following streaming providers in the United States.
| Writing | Elwyn Jones | Novel |
| Writing | John Hopkins | Screenplay |
| Directing | Bob Clark | Director |
| Writing | Arthur Conan Doyle | Characters |
| Writing | John Lloyd | Novel |
| Sound | Carl Zittrer | Original Music Composer |
| Editing | Stan Cole | Editor |
| Sound | Paul Zaza | Original Music Composer |
| Camera | Reginald H. Morris | Director of Photography |
| Camera | David Wynn-Jones | Focus Puller |
| Directing | Ariel Levy | Assistant Director |
| Production | Bob Clark | Producer |
| Production | René Dupont | Producer |
| Production | Robert A. Goldston | Producer |
| Production | Len Herberman | Executive Producer |
| Production | Karen Hazzard | Casting |
| Production | Irene Lamb | Casting |
| Art | Harry Pottle | Production Design |
| Art | Denise Exshaw | Set Decoration |
| Costume & Make-Up | Judy Moorcroft | Costume Design |
| Costume & Make-Up | Colin Jamison | Hair Department Head |
| Costume & Make-Up | Peter Robb-King | Makeup Artist |
| Costume & Make-Up | Jane Royle | Makeup Artist |
| Costume & Make-Up | Jan Jamison | Assistant Hairdresser |
| Sound | Kenneth Heeley-Ray | Supervising Sound Editor |
| Production | John Davis | Production Manager |
| Production | Ted Rouse | Production Manager |
| Camera | Jimmy Turrell | Camera Operator |
| Sound | John W. Mitchell | Sound Recordist |
| Art | Peter Childs | Art Direction |
| Sound | Joe Grimaldi | Sound Re-Recording Mixer |
| Sound | David Appleby | Sound Re-Recording Mixer |
| Editing | Ian McBride | Assistant Editor |
| Sound | Patrick Drummond | Sound Editor |
| Sound | Wayne Griffin | Sound Editor |
| Sound | Dennis Drummond | Sound Editor |
| Costume & Make-Up | Peter Robb-King | Makeup Supervisor |
| Costume & Make-Up | Ron Beck | Wardrobe Supervisor |
| Production | Andy Birmingham | Production Accountant |
| Costume & Make-Up | Colin Jamison | Key Hairdresser |
| Art | Ken Pattenden | Construction Manager |
| Crew | Michael Albrechtsen | Special Effects |
| Directing | Marjorie Lavelly | Continuity |
| Lighting | Ray Meehan | Gaffer |
| Art | Andy Andrews | Property Master |
| Camera | Denis Fraser | Grip |
| Costume & Make-Up | Janet Tebrooke | Wardrobe Master |
| Camera | Terry Lewis | Best Boy Grip |
| Directing | Guy Travers | Second Assistant Director |
| Directing | Ken Goch | Second Assistant Director |
| Production | Liz Taylor | Production Secretary |
| Sound | Keith Pamplin | Boom Operator |
| Sound | Ron Butcher | Sound Engineer |
| Costume & Make-Up | Edward Morton | Wardrobe Assistant |
| Costume & Make-Up | Jan Jamison | Hair Assistant |
| Crew | Jock Kay | Scenic Artist |
| Crew | Lynda Levy | Unit Publicist |
| Camera | David Farrell | Still Photographer |
| Sound | Martin Ashbee | Assistant Sound Editor |
| Sound | Steven Cole | Assistant Sound Editor |
