Dr. Amara Holloway is an expert in antebellum history, but nothing prepared her for the dark past hidden beneath a local tourist attraction: The Manor of Ages haunted house. When her sister, Seraphina, vanishes near Halloween, Amara tracks the last phone ping to the Manor, finding a gruesome secret: a slave-era tunnel connecting the site of old horrors to new, ritualistic murders. Dismissed by a jaded lead detective, Amara is forced into an uneasy alliance with rookie Detective Ben Riley, a cop battling an internal racism review who sees the pattern of missing persons he can't ignore. As Amara uncovers a multigenerational serial killer cabal among the wealthy, Riley's own family connection to the plantation's 'muscle' forces him to choose a side. After Amara is captured and witnesses the horrifying menu of victims, Riley uses his dark family ties to stage a desperate rescue. Now, with a beloved celebrity client dead and the terrifying truth in their hands, the historian and the disgraced cop are on the run, targeted by the most powerful families in America—and the hunt is just beginning.