Former police detective Adrian Monk (Tony Shalhoub), whose photographic memory and amazing ability to piece together tiny clues made him a local legend, has suffered from intensified obsessive-compulsive disorder and a variety of phobias since the unsolved murder of his wife, Trudy, in 1997. Now on psychiatric leave from the San Francisco Police Department and working as a freelance detective/ consultant on difficult cases, Monk hopes to convince his former boss, Captain Leland Stottlemeyer (Ted Levine), to allow him to return to the force. Stottlemeyer, who wavered between admiration for Monk and annoyance at his eccentricities during the first season, is becoming more of a friend to Monk as the series develops, frequently calling him in to help, as much for Monk's benefit as for his own. However, he knows Monk's limitations as well as his strengths and may still harbor doubts about the wisdom of allowing Monk to carry a gun or subdue a perpetrator. Stottlemeyer's second-in-command, Lieutenant Randall Disher (Jason Gray-Stanford), also seems to be developing both admiration and compassion for the man he once labeled "the defective detective."
　　Despite flaws and inadequacies all around, the three are becoming an increasingly effective team, with additional help from Monk's personal assistant. From the double-episode pilot through the first half of season three, Monk was aided by his nurse, Sharona Fleming (Bitty Schram). But in the tenth episode of the third season, Sharona was replaced by a new assistant, Natalie Teeger (Traylor Howard). Like Sharona, a divorcee with a son named Benjy, Natalie is a single parent, a widow with a daughter named Julie (Emmy Clarke). Unlike Sharona, Natalie is not a nurse but a former bartender with a fresh perspective on "Mr. Monk," as she still addresses her new boss.

　　Idris Elba回归BBC一台Luther受到观众热烈欢迎。这部电视剧在国内好评如潮—这部惊险的犯罪系列剧取景华丽，情节跌宕起伏，人物个性鲜明以及刺激的心理悬疑揭秘让观众大呼过瘾。
　　Idris Elba主演犯罪科警探John Luther。在两个新的诡异又惊险的犯罪故事中，这个拥有敏锐洞察力的警探也正努力与心中的恶魔相抗争。
　　因妻子的死而萎靡不振的John Luther回到了警务工作。原来的部门撤销了，他被调到了一个新设立的部门。该部门负责调查重大和连环案件，由前任警局投诉科主任Martin Schenk (Dermot Crowley—曾出演‘通天塔’，‘荒凉山庄’)领导。
　　Luther很快地聚集了他的团队，将他的老搭档警探Justin Ripley (Warren Brown — 曾出演‘占领’，‘无耻之徒’)从**中解脱出来。
　　不久他们就接到了第一个案件。一个戴面具的男人徘徊于伦敦的街头，在历史遗址中进行了一场类似祭祀的谋杀，竭力使他的方式成为一个最后的杰作...
　　在接下来的两个新的特辑中，观众会看到Luther冒着更大的风险并且面临着更艰巨的挑战。
　　Idris Elba凭借Luther一角获得金球奖的提名并荣获第42届全国有色人种协进奖电视电影、迷你剧或特别戏剧的最佳男演员奖。
　　第二季还可以看到Alice Morgan（Ruth Wilson）和Mark North（Paul McGann）的回归，而且他们新增加了一个角色Caroline Jones，由Kierston Wareing饰演。
　　

　　阿莱克斯·古斯曼必须面对他最不愿接受的事实：莎拉的真实一面。原来他从未真正了解过这个妹妹。与此同时，一具埋在他自家院子里的不明尸体如同一枚定时炸弹，随时可以将他再次送进监狱。他别无选择，只能硬着头皮自行调查线索，以还原莎拉背后的恐怖真相，以及她和拉兹卡诺家族的关系。