Based on the novel by Augusta Tucker, the provocatively titled Miss Susie Slagle's is actually a leisurely, sentimental story set in a turn-of-the-century boarding house. The title character, played by Lillian Gish, is the house's landlady, catering exclusively to young doctors and nurses in training. Miss Susie Slagle takes pride in the fact that not one of her boarders has ever failed medical school, but for a while it looks as though this perfect record will be spoiled by Elijah Howe Jr. (Bill Edwards), the seemingly irresponsible son of one of Susie's former tenants (Ray Collins). The bulk of the storyline is carried by med student Pug Prentiss (Sonny Tufts), who carries on a romance with Howe Jr.'s sister Margaretta (Joan Caulfield, in her film-starring debut). Flamboyant comic actor Billy DeWolfe is uncharacteristically restrained as pragmatic third-year student Ben Mead, though the script contrives to allow DeWolfe to do one of his celebrated female-impersonation routines! In true open-ended fashion, the film ends as it begins, with Miss Susie Slagle welcoming another crop of students to her lodgings.
by Hal Erickson synopsis