New Year's Eve celebrations are cut short when a masked man stabs a woman in her own home. Jack and the team must uncover the identity of the murderer before they can strike again.

　　萨莉亚苏丹（多格雷·斯科特 Dougray Scott 饰）一直无法原谅妻子和自己的弟弟偷情，尽管妻子已经不在人世，但他依然被愤怒和绝望侵扰，整整四十天无法入睡，肉体和精神都已经濒临崩溃的边缘，再这样下去，他不仅无法继续坐在王位上，更有可能连性命都丢掉。　　按照律法，萨莉亚苏丹必须马上找到一名女子与其结婚，可是，萨莉亚苏丹早已经失去了对女人的全部信任，他决定在新婚当晚便处死自己的妻子。这个命不久矣的女人便是桑赫莱扎德（米莉·阿威塔尔 Mili Avital 饰）。然而，桑赫莱扎德并没有屈服于命运，而是运用自己会讲故事的天赋，用一个又一个充满了天马行空的奇思妙想的故事留住了自己的性命，并且最终唤起了萨莉亚苏丹对于爱情的渴望。

　　We're transported back to the tropical island of Saint Marie, and this time with a new Detective Inspector in place - but will DI Mervin Wilson remain in the job for long? Following the recently cracked case of ‘who shot the Santas?’, along with the revelation that his estranged mother has passed away, Mervin is ready to get back home and leave the island for good. But when a case close to the hearts of those at the station presents itself, is he tempted to extend his stay?　　As Mervin continues to ruffle feathers, the police team pull together to solve some of the island’s most confounding cases yet.

我们回到了热带岛屿圣玛丽，这次换了一位新警探——但督察梅文·威尔逊会长期留任吗？在最近破获“谁枪杀了圣诞老人？”案件后，以及他疏远的母亲去世的消息曝光后，梅文准备回家并永远离开这个岛。但是，当一个与警局人员息息相关的案件出现时，他是否想延长逗留时间？随着梅文继续惹人厌烦，警察团队齐心协力，解决了岛上迄今为止最令人困惑的一些案件。

BBC一口气续订《天堂岛疑云》第13、14季，以及两集圣诞节特别篇。