Detective Constable Bailey Morgan has been out of the undercover game since her last job went horribly wrong, leaving her with scars inside and out. When her colleague Alice is found dead whilst working deep cover in a women’s prison, Bailey steps in to replace her. Working alone, Bailey embarks on a dangerous journey through the murky underbelly of the prison and soon discovers that Alice’s death was part of a spate of brutal murders. Surrounded by prison officers, criminals and lowlifes, the slightest mistake could cost Bailey her life.