The Only Thing (also known as Four Flaming Days) is a 1925 American silent romantic costume drama, starring Eleanor Boardman. The film's scenario was written by author Elinor Glyn (who also oversaw the film's production), and was based on a story adapted from Glyn's novel of the same name. It was the first film Jack Conway directed for Metro-Goldwyn-Mayer where he remained for until his retirement in 1948. The film is also notable for featuring a young Joan Crawford in her second film role playing a minor part as a lady in waiting.