Mercy Eaton vowed to never set foot inside the Mercer Reformatory for Women again after spending nearly a year confined to one of its holding cells. When her beau, Detective Jeremiah Walker, asks for her assistance with a murder case involving the prison, Mercy outright refuses.

When she realizes the ghost who's been relentlessly haunting her for days is the same murdered woman Walker came to speak to her about, Mercy is forced to reconsider.

Before long Mercy finds herself deep in the prison's clutches, embroiled once again in the sordid nature of unjust imprisonment and confronted by demons she'd long since left at the prison gates. As her relationship with Walker hangs by a thread, and with her sanity in question, Mercy puts everything on the line to solve the young woman's murder and to finally put her own tortured past to rest.