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.

艾德里安·蒙克（阿蒙）曾是旧金山警局侦探，他具有对事物观察细致入微、过目不忘的天赋和高超的破案头脑，他以独特的破案方法破获不少棘手案件，是有名的侦探。几年前阿蒙深爱的妻子被炸弹意外炸死，巨大的打击使他患上了一种强迫症——异常洁癖，极度不能容忍杂乱肮脏无序的环境，畏高，对许多微生物心理过敏，害怕人群……这些奇怪的症状让他无法再胜任警队的职务，他在护士（后来成为了他的助手）沙伦娜的协助下，开设了私人侦探所。两人就像神经版的福尔摩斯和女性版的华生医生，和探长斯塔迈尔以及副手兰迪继续侦破种种奇异的案件，同时，蒙克下决心要找到杀死他妻子的凶手……

如今，从 "名人圈" 里 "卸甲归田" 的Jane当上了加利福尼亚调查局（CBI）专案调查组的独立顾问。他利用自己的"超感"特长连续破获了多起公众关注度高的疑难悬案，惊人的破案效率和成功记录让很多人连呼"神人"。但是在调查局内，大家都知道Jane的底细－－他是个缺乏纪律感、不愿意按规矩办事的家伙。 　　古板严肃、一切只知道照本宣科的高级特工Teresa Lisbon (Robin Tunney, "PrisonBreak")拿Jane非常头疼－－一方面，她公开排斥Jane，认为他虚伪、自恋、华而不实，喜欢卖弄自己，不希望他留在自己的团队里。她尤其憎恨Jane公私不明、轻重不分的性格，认为他总有一天会威胁到所有人的安全。但另一方面，她也不得不承认：Jane的作用无人可替代，他的判断力对同事们来说非常有价值。 　　燕迹秦清添加。

如今，从 "名人圈" 里 "卸甲归田" 的Jane当上了加利福尼亚调查局（CBI）专案调查组的独立顾问。他利用自己的"超感"特长连续破获了多起公众关注度高的疑难悬案，惊人的破案效率和成功记录让很多人连呼"神人"。但是在调查局内，大家都知道Jane的底细－－他是个缺乏纪律感、不愿意按规矩办事的家伙。 　　古板严肃、一切只知道照本宣科的高级特工Teresa Lisbon (Robin Tunney, "PrisonBreak")拿Jane非常头疼－－一方面，她公开排斥Jane，认为他虚伪、自恋、华而不实，喜欢卖弄自己，不希望他留在自己的团队里。她尤其憎恨Jane公私不明、轻重不分的性格，认为他总有一天会威胁到所有人的安全。但另一方面，她也不得不承认：Jane的作用无人可替代，他的判断力对同事们来说非常有价值。 　　燕迹秦清添加。

Ned (Lee Pace )开了家派店，通过接触死尸，使他的聪明有了用武之地。但是他的聪明才智却害得他与别人越发疏远，正如女服务员Olive Snook 所发现的。当私人侦探Emerson Cod 发现他的秘密后，他的生活就变得越发复杂、难以捉摸了。Emerson 说服爱财如命的Ned 帮他从死人口里套出杀死他们的凶手的名字以破谋杀案。 　　接着，Ned 接手处理一个永远改变他生活的案子。他童年的梦中情人 Charlotte在一艘船上 被杀害了。她的死迫使他重新回到他的家乡去侦破此案。但一旦和Chuck 重圆，Ned 却不能将她遣返。他帮她从她死去的阿姨Lily 和 Vivian 那逃了出来。 　　Chuck 成为Ned 和Emerson 的PI 公司的第三个合作伙伴，但她激励他们俩要用他们的聪明才智为善，而不只是为了盈利。Ned 能与他曾经深爱过的惟一女生重圆感到欣喜过望。除了一个可怕的事情外，生活将是美满非常——如果他将碰她一次，她就会再次死去，这次就永不复生了。 　　This romantic drama shows us the strange world of a man, Ned, who can bring dead people back to life through the power of his touch. The people he touches, however, can only stay alive for one minute, and if they don't die again, someone else nearby will die. Ned decides to use his ability to solve crime. He and a local investigator, Emerson, bring murder victims back to life and find out who killed them, to cash in on case-solving rewards. But, when Ned brings an old crush back to life, and decides to let her live, things start to get complicated...