根据Mende Nazer的真实经历改编，讲述了一个12岁苏丹女孩，被绑架并卖身为奴的故事。她在苏丹首都喀土穆做了6年奴隶后被送到伦敦，虽然改名换姓，但护照被没收，并且主人告知她，如果试图向当局求助，父亲就会被杀害。幸运的是，一位有同情心的人给予了她回到苏丹和家人团聚的希望。 影片试图引发观众对奴隶问题的关注，根据影片结尾的字幕，至今仍有大约5000人以奴隶身份生活在英国。

Lewis attends a book launch for a fantasy novel penned by prodigious young research fellow Dorian Crane, with whose adoptive mother, Ginny, Robbie's boss Jean is trying to match-make him. Later that night a Czech hotel worker Marina is found murdered. Professor Deering, the uncle of Dorian's fiancee and muse, Alice, confesses to having seen Marina on a foreign website and paid for her to come to Oxford, finding her work. However, as a supposed gay man, he is keen to hush up his sex life with her. Robbie believes that Marina was killed in mistake for Alice and then Dorian is also murdered, in order to preserve a secret well beyond Robbie's imagination.