New Tricks is a British police procedural comedy-drama that follows the fictional Unsolved Crime and Open Case Squad (UCOS) of the Metropolitan Police Service. The show was created by Roy Mitchell and Nigel McCrery, and premiered in 2003 with a 90-minute special, which later resulted in the show's first full series airing. New Tricks ran for twelve series – from 2003 until 2015 – concluding on 6 October 2015. BBC controller Charlotte Moore and BBC drama controller Ben Stephenson explained the reason behind the show's cancellation on 24 February 2015, stating that "it's important to make room for new series and continue to increase the range of drama on the channel".