A massive search is underway for DC Eva Sharpe's missing eight-year-old daughter, Joanna. As a police officer, Eva is only too aware how serious the situation is, especially when a press conference is called. PC Reg Hollis is suspicious of a couple he questions during enquiries. Joe Kincaid joins the search, and Sgt Craig Gilmore notices the attraction between Kincaid and PC Luke Ashton. PC Ruby Buxton discovers a vital clue to Joanna's disappearance at a local corner shop.