编剧：Maurice Rostand / 雷金纳德·贝克莱 / 山姆森·雷佛森 / 欧内斯特·沃伊道
主演：莱昂纳尔·巴里摩尔 / 南茜·卡罗尔 / 菲利浦·霍尔姆斯 / Louise Carter / Lucien Littlefield / 汤姆·道格拉斯 / 扎苏·皮茨 / Frank Sheridan / George Bickel / Emma Dunn / Reginald Pasch / Rodney McLennan
又名：深闺梦里人(港) / The Man I Killed
评分：豆瓣 7.8 / IMDB 7.6 / 烂番茄 100%
Haunted by the memory of Walter Holderlin, a soldier he killed during World War I, French musician Paul Renard (Phillips Holmes) confesses to a priest (Frank Sheridan), who grants him absolution. Using the address on a letter he found on the dead man's body, Paul then travels to Germany to find his family. As anti-French sentiment continues to permeate Germany, Dr. Holderlin (Lionel Barrymore) initially refuses to welcome Paul into his home, but changes his mind when his son's fiancée Elsa identifies him as the man who has been leaving flowers on Walter's grave. Rather than reveal the real connection between them, Paul tells the Holderlin family he was a friend of their son, who attended the same musical conservatory he did. Although the hostile townspeople and local gossips disapprove, the Holderlins befriend Paul, who finds himself falling in love with Elsa (Nancy Carroll). When she shows Paul her former fiancé's bedroom, he becomes distraught and tells her the truth. She convinces him not to confess to Walter's parents, who have embraced him as their second son, and Paul agrees to forego easing his conscience and stays with his adopted family. Dr. Holderlin presents Walter's violin to Paul, who plays it while Elsa accompanies him on the piano. The film's original title, The Man I Killed, was changed to The Fifth Commandment to avoid giving "wrong impressions in the minds of the public about the character of the story." It ultimately was released as Broken Lullaby.