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.
肖央,佟丽娅,段奕宏,刘雅瑟,王龙正,冯兵,周楚濋,徐诣帆,高捷,尹子维,张榕容,卢慧敏,陈昊,范静祎,叶泉希
Yagoub Alfarhan,Maria Bahrawi,Abdullah Al-Sadhan,AYSHA ALKUSAYER,ABDULRAHMAN ALWAFI
迈文娜·巴泰勒米,迪米特里·鲍德里,马希伊斯·伯纳德,克莱门特·法沃,卢娜·加勒特
余乐欣,张艺洋,田京峰
李来,陈瑞妍,孙锡久,郑秀斌,李正河
沃伊捷赫·福多兹芝基,Ondrej Stupka,塔蒂阿娜·保霍福娃,Stanislav Majer,沃依特赫·科特克,玛丽卡·索波斯卡,佩德罗·林涅尼奇卡,马丁·霍夫曼,Petr Halícek,马提亚斯·热兹尼切克,Jacob Erftemeijer,扬·奈德巴尔,托马斯·马斯塔利,伊戈尔·巴雷斯,Michaela Majerníková,Jevgenij Libeznuk,扬·诺沃特尼,Tomás Weber,丹尼尔·图马,Kupcová Marie Anna