St. Louis’ Rats & People Motion Picture Orchestra — a longtime fest favorite — returns to SLIFF with original scores and live accompaniment for not one but two silent films: a classic Buster Keaton comedy, “Sherlock Jr.,” and a bizarrely amusing industrial short, “Won by a Sweet.” In “Sherlock Jr.,” the Great Stone Face plays a movie projectionist and wannabe detective alienated from his girl’s affections by a sneaky romantic rival, who lifts a watch from the father of their mutual love interest and pins the theft on innocent Buster. Falling asleep in the projection booth, disconsolate Buster dreams himself into the film he’s screening, where he assumes the mantle of the great Holmes and solves the crime. As an added treat, the Rats accompany “Won by a Sweet,” a loopy, hallucinatory 1929 industrial film that promotes the positive health effects of candy. The film was preserved by the Washington U. Libraries' Film & Media Archive, a longtime SLIFF partner.