एपिसोड लिस्ट

A group of teenagers in a Welsh town break into a construction site to make mischief, only for an explosion to claim the lives of several of the children. As the locals struggles to come to terms with the tragedy, one mother directs her anger at the boss of the building project, determined to get justice.

In the aftermath of the tragedy, Polly worries that husband, Iwan, might be hiding something. Angela gathers the families to fight for justice, and as Harriet faces questions at work, her assistant - and lover - Tim acts to protect her by leaking information that drives a wedge through the town.

The inquest opens, and questions are asked of Iwan, Alan and Harriet. Polly is asked to betray Iwan to get the evidence the victims' families need, while Harriet's boss faces her with an impossible choice - with devastating results for Tim.

Harriet is in the dock for gross negligence manslaughter as the families' private prosecution finally arrives in court. Angela and the others have nearly bankrupted themselves to fund the case. Will it all have been worth it? Polly fears for Leona, who wants to give evidence, but it is her relationship with Iwan that presents her with the most challenging questions.