Murder by Decree (1979) runs 2 h 4 min, is rated PG in the US and averages 6.3 from 186 TMDB members. 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 their 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.
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Streaming availability by JustWatch. In the US, as of 2026-11-05: fuboTV (subscription), Darkroom (subscription), Lionsgate+ Amazon Channel (subscription), Howdy Amazon Channel (subscription), Xumo Play (free with ads), Mometu (free with ads).
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