Rumours are flying about Denise's personal life. Nat's dislike of Mimi means she suspects her of being behind the missing files, even though they disappeared before she started. Ingrid brings her foster child Limahl into this maelstrom and Rose's car is promptly stolen. Nitin runs away from some angry Turkish men, leaving Ingrid to 'man up'. PC Harris throws the historic abuse case back in the Elm Heath court, but the files that would throw light on it are in the batch that Nat can't find. And Nat reveals that she's been hiding something under her blouse, and it's not the missing files.

Rose is smitten with Dennis, but it's hard dating the boss's brother, and Lee is making a last ditch attempt to win her back. Nitin steps up to guide Nat through her pregnancy, while Martin faces insinuations about his unorthodox living arrangement with Mimi. The stray files make a surprise return, but for one member of the team it would be better if they had stayed missing. Rose gets the creeps while visiting some home-schooled children and Al decides to forsake the life of a social worker for a new start in Scotland.