This gripping five-part drama follows a tense police surveillance investigation into a tight knit Manchester community and explores whether it is ever possible to observe the lives of others with true objectivity and zero effect.
Martin prepares Carl to confront Kate in the hopes of a confession, but the surveillance operation takes an unexpected turn, leading to devastating consequences. Manchester primary school teacher Gemma Hillman goes missing and DCs Martin Young and Stella Beckett are given the task of putting her boyfriend - the prime suspect - under surveillance.