When We Were Twenty-one,' in which H. B. Warner is starring, is going to be screened at the World Theatre. The film is a photoplay version of H. V. Esmond's stage drama. Besides, a splendid cast has been assembled by Director Henry King. Details as follow: Mr. Warner plays Nat Goddwin's role; James W. Morrison is a boy and Claire Anderson is the girl; Christine Mayo is the adventuress; with smaller parts played by Minna Grey and Claude Payton; Jesse D. Hampton produced the feature for Pathe distribution. Film synopsis included.