The fourth and final installment in the spellbinding series from the irrepressible, #1 New York Times bestselling author Maggie Stiefvater. All her life, Blue has been warned that she will cause her true love's death. She doesn't believe in true love and never thought this would be a problem, but as her life becomes caught up in the strange and sinister world of the Raven Boys, she's not so sure anymore.

Two graduate students must set aside their rivalry and journey to Hell to save their professor’s soul, perhaps at the cost of their own. Alice Law has only ever had one goal: to become one of the brightest minds in the field of Magick. She has sacrificed everything to make that a reality—her pride, her health, her love life, and most definitely her sanity. All to work with Professor Jacob Grimes at Cambridge, the greatest magician in the world—that is, until he dies in a magical accident that could possibly be her fault. Grimes is now in Hell, and she’s going in after him. Because his recommendation could hold her very future in his now incorporeal hands, and even death is not going to stop the pursuit of her dreams. Nor will the fact that her rival, Peter Murdoch, has come to the same conclusion.

In an isolated castle deep in the Austrian forest, Laura leads a solitary life with only her ailing father for company. Until one moonlit night, a horse-drawn carriage crashes into view, carrying an unexpected guest – the beautiful Carmilla. So begins a feverish friendship between Laura and her mysterious, entrancing companion. But as Carmilla becomes increasingly strange and volatile, prone to eerie nocturnal wanderings, Laura finds herself tormented by nightmares and growing weaker by the day… Pre-dating Dracula by twenty-six years, Carmilla is the original vampire story, steeped in sexual tension and gothic romance.

She’s off-limits, but he’s never been good at following the rules. For the first time in her life, Clementine “Emmy” Ryder has no idea what she’s doing. She’s accomplished everything on her to-do list. She left her small hometown of Meadowlark, Wyoming; went to college; and made a career for herself by doing her favorite thing: riding horses. But after an accident makes it impossible for her to get back into the saddle, she has no choice but to return to the hometown she always wanted to escape. Luke Brooks is Meadowlark’s most notorious bad boy, bar owner, and bachelor. He’s also the unofficial fifth member of the Ryder family. As Emmy’s older brother’s best friend, Luke spent most of his childhood antagonizing her. It’s been years since he’s seen her, but when she walks into his bar and back into his life, he can’t take his eyes off her. Despite his better judgment, he wants to do a whole lot more than just look at her. Emmy’s got too much on her mind to think about romance. And Luke knows he should stay away from his best friend’s younger sister. But what if Luke is just what Emmy needs to get her spark back? Or will they both go up in flames?