The Triumph of Sherlock Holmes is a 1935 British mystery film directed by Leslie S. Hiscott and starring Arthur Wontner.

Sherlock Holmes and is retiring, Watson taking up the rooms full-time with his wife (who, although repeatedly mentioned, remains unseen throughout the film,) and is visited by Professor Moriarty before he goes, the latter congratulating Holmes on his "wise" decision to retire, saying that he should otherwise have been obliged to "take extreme measures".

Meanwhile, Holmes, while Watson is paying a visit to him and Mrs. Hudson, receives a letter from his informant Porlock, a "weak link" in Moriarty's "chain", which consists only of several letters, numbers, and the words "DOUGLAS" and "BIRLSTONE", which, by various deductions and Whittaker's Almanac (as in the book), they proceed to figure out means that something bad shall occur to Mr. John Douglas of Birlestone Manor.

Lestrade, fulfilling Alec MacDonald's somewhat less dim-witted role from the book, then arrives, saying he wishes to consult Holmes about something; then sees the Birlstone papers, and is quite surprised, for, as he explains, Douglas was "horribly murdered" the night before.

Upon Lestrade and Watson remarking that it was a long drop, Holmes says it was "a little longer than that requiring by law", but that it suffices, as he calmly lights his pipe.

The New York Times wrote, "a mellow, evenly paced British film that renders to Holmes what Sir Arthur Conan Doyle would have rendered to him: Interest, respect and affection...Mr. Wontner decorates a calabash pipe with commendable skill, contributing a splendid portrait of fiction's first detective.

Lyn Harding is capital as Moriarty and Roy Emerton, Leslie Perrins, Ian Fleming and Michael Shepley perform competently.