Kiernan has crafted something at once familiar and delightfully surprising with this fantasy quest. Like biting into an unassuming brownie to discover it has a heart of Nutella, Mup’s narrative has all the hallmarks of a traditional misadventure with the fairy folk, but the unusual deployment of the "chosen one" trope, a plot-driving interweave of magic and family tension, and ineffably Irish elements of worldbuilding and characterization deliver readers an unexpected twist of richness. It’s fortunate a trilogy is planned, for readers will surely demand more of Mup.
—Kirkus Reviews (starred review)
Kiernan deftly weaves an enchanting tale delicately grounded in real life issues. The book subtly explores themes of dictatorship, ethical choices, and the complexity of family ties. Mup is a likable underdog whose vulnerable yet brave spirit will endear her to readers. While much familiar fantasy ground is covered, this is a solid entry featuring a strong female protagonist for younger middle grade readers.
—School Library Journal
From the author of Into the Grey (2014) comes this exciting first adventure in the Wild Magic trilogy…Kiernan finds magic in music, rhyme, and freedom of speech in this brilliant adventure into another world.
Kiernan writes with a beautiful lyricism, her narrative humming along like music.