Library Journal: In her first novel, Hall surprises and perplexes with spellbinding yet simple dialogs that raise more questions than they give answers. The mysterious, dark, and often violent worlds envelop readers in a cacophony of mystery and fantasy. Even the identity of the female lead is foggy as her form shifts over time, taking possession of new bodies. As the title reveals, someone protects the border, and from the first few chapters we glimpse demons reminiscent of Haitian worshippers possessed by Gede, the spirit of the dead. Shapeshifting and underworld realms take center stage. The characters eventually grow, becoming stronger as plots progress, expressing extreme power and weakness. Life and death feel mutable in the imaginary arena of Mkalis. Points of contact are elaborately visualized, boundaries normally fixed dissolve within the pages, terrifying and wild apparitions manifest and recede just as quickly as they appear, resulting in wonder. VERDICT For fans of occult-tinged speculative fiction.