As they celebrate the opening of their underground nightclub, the Zeroes, six teenagers with unique abilities, learn about the sinister power of Swarm, who uses a crowd's rage to kill--and who loves killing Zeroes.

From the imaginations of bestselling authors Holly Black and Cassandra Clare comes a heart-stopping plunge into the magical unknown. Think you know magic? Think again. The Magisterium awaits . . Most people would do...