本剧改编自Josephine Hart的同名小说，聚焦一场危机四伏的三角恋。 令人难以捉摸的Anna Barton与Jay早已订婚，但她跟未婚夫的政客父亲William展开了一段热烈的地下情，Anna努力维持着这两段关系。另一边的William则陷入了难以释怀的漩涡，而他的妻子Ingrid对此一无所知。但在有人受伤之前，这个秘密又能隐瞒多久？
第四季主要描述Carrie以一个情报官员的身份在别国首都开展工作的情况:她如何招募情报线人，如何与外国政府打交道，如何与支援团队打交道，如何与大使馆打交道，如何与宿主国的情报机构打交道以及她如何与所在国的情报部门合作——这是一个复杂多变，风云诡谲的世界，充满了阴谋，戏剧和冒险。
Relationships are challenged at Station 19 following Sullivan's actions at Maya and Carina's wedding, putting his marriage with Andy to the test. Dean comes to terms with his feelings for Vic, while Travis rekindles an old flame.
A multi-generational saga set in Alberta, Canada and centered on a family getting through life together in both happy and trying times.
第四季依然由Reece Shearsmith和Steve Pemberton两位怪才主演，依然是6集。 其中第一集叫"桑吉巴"，讲述的伦敦一家叫桑吉巴的酒店第9层的故事，游客、妓女等形形色色的人都聚集在这里，发生了阴差阳错的事...
Sam's cases involve a series of revenge killings by a former Auschwitz prisoner; the mysterious deaths of teenage girls killed 15 years apart in Norway; a suspicious suicide and a beautiful Nun in a convent by the sea - very different stories, all employing Sam's expertise to the maximum.
