It starts with a brutal murder and rewinds 15 days to reveal how, why and, most importantly, who, is responsible.

Cast: Catherine Tyldesley, Geraint Morgan, David Caves, Tom Rhys Harries, Freddy Carter, Kezrena James, Sharon Morgan, Gabrielle Creevy, Ifan Huw Dafydd, Mali Tudno Jones, Frances Grey, Aneirin Hughes, Sue Roderick, Bruce Herbelin-Earle, Ela Carlisle