Five-part BBC mini series revolving around the disappearance of a young mother in a quiet British suburb. One hot summer's day, Leanne Wellings (Christine Tremarco) is taking her two young children to visit her grandfather (Edward Woodward). When she stops to buy flowers at a motorway layby, she and the children inexplicably vanish. Their ordeal is captured on CCTV cameras - and before long the family's heart-stopping trauma is not only the subject of a complex and far-reaching police investigation, but a major national news story. Each episode follows the events of one day in the five days following Leanne's disappearance.