Under Lock and Key  (1995)

Theatrical Release Information:
Under Lock and Key

Wendi Westbrook, Barbara Niven, and Taylor Leigh star in this crime drama set in a women's prison. An FBI agent needs to track down some evidence which was hidden away by the former girlfriend of a major drug kingpin. The woman in question is now behind bars, so the agent poses as a prisoner in hopes of gaining her confidence and learning her secrets. After a number of shower scenes, the agent is taken off the case, but the dope ring has discovered the nature of the agent's project and kidnaps her daughter in retaliation. Desperate to get her child back, the agent joins forces with a sympathetic guard from the prison to confront the dealers and bring her daughter home. ~ Mark Deming, All Movie Guide