A gifted but idiosyncratic teenager must unlock fiendish puzzles, pore through occult texts, and unearth buried clues—all while reckoning with the outside world in ways she never has before—as she pursues an ancient secret in this brainteasing, YA/adult conspiracy thriller.

When Arizona learns her mother has been kidnapped and finds a cryptic test accompanying the ransom note, she has no idea that she has just been enlisted in a treasure hunt, on the trail of an occult, centuries-old secret her father supposedly took to his grave. And if the prize at the end is real, it could shake the world.

Following a trail of cryptic clues across the remote American West, Arizona must use her unique skills and confront her greatest fears, all while staying one step ahead of those working against her as she races toward the dark and dangerous secret that is The Language of the Birds.