The Hidden Knife

“Unique and gripping.”—Tamora Pierce New York Times bestselling author Melissa Marr invites readers into a magical world where stone gargoyles live among humans, ferocious water horses infiltrate the sea, and school hallways are riddled with magic wards--and where a group of young heroes seeking justice discovers those very creatures are the best of allies. Twenty years ago, a door opened between the world of humans and the Netherwhere, allowing all kinds of otherworldly creatures entry. Some, l