When Kate Flanagan sits in the Old Bailey court room and hears the seven year sentence for armed robbery being passed on her husband, she knows that now is the time to get free of him and make a new life for herself and her two children. Forced to quit her terraced house in Bermondsey for rent arrears, Kate has to take the unpalatable step of moving to a slum tenement block in Milldyke Street, Dockhead. Here she meets the attractive Amy Almond whose friendship opens new doors of opportunity for fresh relationships. When Kate stumbles over the murdered body of a single woman who lived in the next block, she realises that she, herself, could be a target. She turns to the attractive and sympathetic Sergeant Cassidy for protection and finds that her emotions, as well as her life, are in danger...