Best TV detective series

Monk

Monk is an American dramedy series created by Andy Breckman and starring Tony Shalhoub as the title character.
The show debuted on July 12, 2002, on the USA Network; it completed its sixth season on February 22, 2008 and was renewed for a seventh season which started July 18, 2008 at 9/8c pm.

Plot
Adrian Monk was a brilliant detective who worked for the San Francisco Police Department until his wife, Trudy, was killed by a car bomb, which Monk believed was intended for him (the killer eventually confesses to him that was not the case). Trudy's death led Monk to suffer a nervous breakdown. He was discharged from the force and became a recluse, refusing to leave his house for over three years. With the help of Registered Nurse Sharona Fleming (Bitty Schram), he was finally able to leave the house. The breakthrough allowed him to work as a private detective and a consultant for the homicide unit despite remaining limitations rooted in his obsessive-compulsive disorder, which had grown significantly worse after the tragedy.
Monk's compulsive habits are numerous, and a number of phobias compound his situation. The OCD and plethora of phobias inevitably lead to very awkward situations and cause problems for Monk, and anyone around him, as he goes about investigating the cases. However, these same personal struggles, particularly the OCD, are what aid him in solving cases, resulting in his catchphrase, “It’s a gift... and a curse.”

Captain Leland Stottlemeyer (Ted Levine) and Lieutenant Randall "Randy" Disher (Jason Gray-Stanford) call on Monk when they have trouble with an investigation. Stottlemeyer is often irritated by Monk's disorder, but respects his friend and former colleague's amazing observational abilities, as does Disher. Ever since childhood, Monk's obsessive attention to detail allowed him to spot tiny discrepancies, find patterns, and make connections that others often fail to make. Monk continues to search for information about his wife's death, the one case he has been unable to solve.

When Sharona decides to re-marry her ex-husband and moves back to New Jersey, Natalie Teeger (Traylor Howard), a widow and mother of an eleven-year-old daughter, is hired as Monk's new assistant. Monk has a brother, Ambrose, and a half-brother, Jack, Jr.