The Passing of the Third Floor Back is a 1918 British/American silent allegorical film based on the 1908 play The Passing of the Third Floor Back by Jerome K. Jerome and directed by Herbert Brenon. The star of the film is Sir Johnston Forbes-Robertson, a legendary Shakespearean actor, who starred in the 1909 Broadway presentation of the play and its 1913 revival. Forbes-Robertson had been knighted by King George V in 1913 and had retired from acting in theatre that same year. In his retirement Forbes-Robertson had only dabbled in film acting making a 1913 film version of Hamlet, the most famous role he had played on the stage. Filmed in 1916, it was released in 1918.