SWI – HORN BOOK

Vividly descriptive language and further development of complex main characters keep the narrative intense and engaging. Encounters with dark supernatural powers and the back-and-forth travel to the spirit world (using a drop of a mysterious elixir, a talisman, and a clock) make this book's premise less plausible than its predecessor's; and yet, the improbable doesn't seem so impossible thanks to Oppel's impressive storytelling ability.

– HORN BOOK