Agnes Barton and Eleanor Mason's most riveting case yet. For years Agnes and Eleanor longed to be taken seriously by law enforcement for their investigative skills, and when they're deputized to enter Westbrook Prison as undercover inmates they finally have their chance. Westbrook's beautician, Trudy Taylor, was found dead during lockup and the inmates have threatened to riot after Warden Geyer's investigation of the incident falls short. Agnes and Eleanor enter the prison without the inmates or prison staff knowing what they're there to do. With the encouragement of the inmates, Agnes and Eleanor make a bargain that the warden can't turn down - not if she wants to prevent a riot. The investigators are in the worst place possible, struggling to integrate into the inmate population. As the investigation moves forward, the truth might be more than they can handle.