The drama focuses on England's controversial joint enterprise doctrine. It is set in North West England, and was filmed in Southport (although the town is never mentioned).

First shown on 6 July 2014, the drama examines the issues surrounding a case in which the defendants were charged with murder involving joint enterprise or common purpose. McGovern was inspired by the real life case of 16-year-old Jordan Cunliffe, sentenced under this law for a minimum term of 12 years for the murder of Garry Newlove, despite Cunliffe not actively taking part in the attack.