Morrigan battles a new evil as a strange, frightening illness takes hold of Nevermoor in this captivating and heart-pounding third book of the instant New York Times bestselling series -- now in paperback!Morrigan Crow and her friends have survived their first year as proud scholars of the elite Wundrous Society, helped bring down the nefarious Ghastly Market, and proven themselves loyal to Unit 919. Now Morrigan faces a new, exciting challenge: to master the mysterious Wretc