本劇是根據美國熱門犯罪辦案影集《法網遊龍》系列影集改編的英國版，由兩屆艾美獎最佳製片得主Dick Wolf領軍製作。本劇主角DS Ronnie Brooks(Bradley Walsh飾)，一位典型的東倫敦人，經驗老到的探員，是辦案方式軟硬兼施的DS Matt Devlin(Jamie Bamber飾)的好友夥伴。兩人聽命於上司DI Natalie Chandler(Harriet Walter飾)，一位會挺他們到底，並育有子女的媽媽。CPS團隊包括捍衛正義的檢察官James Steel(Ben Daniels飾)，努力工作，擁有堅強意志的Alesha Phillips(Freema Agyeman飾)，還有他們CPS團隊，總是構思著更大計畫的上司George Castle(Bill Paterson飾)。美國黃金時段的熱門影集《法網遊龍》系列由知名製片Dick Wolf一手打造，在97年獲得艾美獎十一項獎項提名，並拿下戲劇類最佳影集的殊榮，是美國犯罪偵查類影集的金字招牌，除此之外還有《法網遊龍：特案組》和《法網遊龍：犯案動機》等分支系列影集。
The new series is based on the enormously successful U.S. format created by two time Emmy award-winning producer Dick Wolf. Bradley Walsh (Torn, Coronation Street) is DS Ronnie Brooks, a real East End, copper’s copper, friend and partner to the charming DS Matt Devlin, Jamie Bamber ( Battlestar Galactica, The Last Detective, Ultimate Force) whose approach to policing is part seduction part force. Both report to DI Natalie Chandler (Harriet Walter, Morris: A Life With Bells On, Broken Lines, Atonement) a working mum who would back them to the end. While the CPS team comprises Ben Daniels (The Passion, The State Within, Cutting It) as dedicated Senior Crown Prosecutor James Steel, a man on a mission for justice; Freema Agyeman ( Dr Who,Torchwood, Little Dorrit) as hard working, strong-willed young prosecutor Alesha Phillips; and Bill Paterson (Little Dorrit, Criminal Justice, Sea of Souls) as their respected boss CPS director George Castle, a man trying to balance his ideals with the bigger picture. The brainchild of creator Dick Wolf, Law & Order is the most successful brand in primetime U.S. television. It was the 1997 Emmy Award winner for Outstanding Drama Series and the record holder for the most consecutive 11 nominations for a drama series. It has also turned into one of TV entertainment’s most pre-eminent brands, with its successful spin-offs Law & Order: Special Victims Unit and Law & Order: Criminal Intent.