Two series ITV drama based on the novels by Sophie Hannah. Each two-part series covered a different crime case being investigated by detectives Charlie Zailer and Simon Waterhouse. In the first series they investigated the double murder of a mother and her child. In the second series they investigated the murder of a man who had recently admitted to abusing a former girlfriend. Both series starred Darren Boyd and Olivia Williams with Rupert Graves and Amy Beth Hayes guest starring in Series One.