"In the dazzling conclusion to the Greystone Secrets series from New York Times bestselling author Margaret Peterson Haddix, the Greystones and their doubles, the Gustanos, must team up to save the alternate world--before both worlds are lost. All secrets are revealed in this page-turning, suspenseful story that shows the importance of teamwork, telling your story, and taking action when it matters most." --

Sixteen-year-old Nora Grey struggles to face the truth while coping with having a fallen angel boyfriend named Patch and unraveling the mystery surrounding her father's murder.

Shortly before her thirteenth birthday, shy and withdrawn Tara is sent to stay with her aunt, uncle, and cousin in her parents' hometown of Willow Falls, where she makes friends and becomes involved with an elderly buyer and seller of collectibles, who seems to be trying to give Tara some kind of mysterious message.

When Ethan wakes after the chilling events of the Eighteenth Moon, his one goal is to return to Lena and his loved ones, while back in Gatlin, Lena vows to do whatever it takes to bring Ethan home--even trusting old enemies and risking the lives of those Ethan left to protect.

"With the help of some unexpected, and rather ghostly, allies, Lockwood & Co. must battle their greatest enemy yet, as they move ever closer to the moment when the earth-shattering secret of 'the problem' will finally be revealed"--

"When otherworldly forces descend on their town of Whispering Pines, conspiracy theorist Rae, who's searching for her lost father, and Caden, who's haunted by the ghost of his brother, must band together to save their home."--

Fifteen-year-old twins Sophie and Josh Newman continue their magical training in Paris with Nicholas Flamel, Scatty, and the Comte de Sant Germaine, pursued by Doctor Dee and the immortal Niccolo Machiavelli.

At Spence Academy, sixteen-year-old Gemma Doyle continues preparing for her London debut while struggling to determine how best to use magic to resolve a power struggle in the enchanted world of the realms, and to protect her own world and loved ones.

In the quiet seaside town of Capri, sixteen-year-old Gemma enjoys a close bond with her sister Harper and a growing attraction to next-door neighbor with Alex, but everything changes when, after partying with newcomers Penn, Lexi, and Thea, Gemma discovers she has powers that will force a terrible choice.

"After suffering a tragic loss, eleven-year-old Ollie only finds solace in books. So when she happens upon a crazed woman at the river threatening to throw a book into the water, Ollie doesn't think--she just acts, stealing the book and running away. As she begins to read the slender volume, Ollie discovers a chilling story about a girl named Beth, the two brothers who both loved her, and a peculiar deal made with "the smiling man," a sinister specter...