B&N SFF Blog: Gideon is terrifically funny and easy to root for, and her plain-speaking snark and crude asides peel the varnish off the coiffured world she inhabits…
…almost every member of the cast becomes well-defined, interesting, and treated with a sincerity that comes almost as a surprise in a book as proudly sarcastic as this one can be—something especially potently felt in the mutating, if always adversarial, relationship between Gideon and Harrow. And if almost every member of the supporting cast plays to type—the scholar, the fanatic, the soldier, the arrogant princess, the affable knight—it only adds to the fun of being trapped with them in a weirdo gothic space thriller, and such a terrible shame that the twists and turns of Muir’s plot prove so very, very dangerous for her characters. As perhaps expected from a book with a confetti of bones on the cover and the prefix “necro” attached liberally throughout, much of the action is fittingly gruesome and probably not for delicate constitutions.
Muir’s debut is smart, fun, and fresh, bursting with thrilling action and derring do, genuinely puzzling puzzles, lots of swears, heaps of yucky dead things, and a storm of skeletons. The wild tonal contrasts and kitchen-sink approach to both the genre and the prose (spot the buried Simpsons reference amid a scene of otherwise tense exposition) somehow works in symphonic harmony, thanks to an extraordinarily likable heroine supported by Muir’s whip-sharp voice and clockwork plotting. The end of the novel gestures toward larger interplanetary goings-on that will presumably materialize in planned sequels, good news for readers who will be eager to dive back into Muir’s madcap techno-necromantic world. Consider my bags packed for wherever Muir would like to take me next (though my stomach would perhaps appreciate slightly less detailed descriptions of cartilage on the next trip).
Library Journal: The male gaze and attitude is rife but has purpose, one that Fetching and many other female characters upend every chance they get. VERDICT: French’s sequel to The Grey Bastards, a 2018 LJ Best Book, continues the half-orcs’ penchant for rough rides, foul language, and heady action sequences.
Kirkus

Booklist: There are three things to remember about the spirit realm: follow the rules, get consent, and do not eat or drink. Another unspoken guideline is to trust no one beyond the border between the mortal and spirit worlds. Controlling each domain is a god or demon who will kill for sport, especially anyone who breaks their rules. The border keeper has had many names and inhabited untold vessels over innumerable years, but she lives alone and does not suffer fools lightly. She once loved a god king but lost him to treachery and murder centuries ago. A wandering scholar arrives at her home, seeking passage, though he will not specify what he is looking for in the world of spirits. He has a sad story that brought him to her door, and for reasons she does not understand, will compel the guardian to accept him and act as his guide. With parallels to a range of mythologies, Hall’s elegant descriptive language evokes a vivid world of lost souls and revenge in this fast-paced fantasy debut.