YA if you like Percy Jackson by Rick Riordian...

While working at pleasant but mundane summer jobs in San Francisco, fifteen-year-old twins, Sophie and Josh, suddenly find themselves caught up in the deadly, centuries-old struggle between rival alchemists, Nicholas Flamel and John Dee, over the possession of an ancient and powerful book holding the secret formulas for alchemy and everlasting life.

Seventeen-year-old Zélie, her older brother Tzain, and rogue princess Amari fight to restore magic to the land and activate a new generation of magi, but they are ruthlessly pursued by the crown prince, who believes the return of magic will mean the end of the monarchy. Zélie Adebola remembers when the soil of Orïsha hummed with magic. Burners ignited flames, Tiders beckoned waves, and Zélie's Reaper mother summoned forth souls. But everything...

In Alagaesia, a fifteen-year-old boy of unknown lineage called Eragon finds a mysterious stone that weaves his life into an intricate tapestry of destiny, magic, and power, peopled with dragons, elves, and monsters.

In a world where some people are born with extreme and often-feared skills called Graces, Katsa struggles for redemption from her own horrifying Grace, the Grace of killing, and teams up with another young fighter to save their land from a corrupt king.

Nhika, a young woman hiding in the fringes of society, must use her forbidden healing ability to cure the only witness to a murder.

"Filled with mystery and an intriguingly rich magic system, Tracy Deonn's YA contemporary fantasy reinvents the King Arthur legend and "braids together Southern folk traditions and Black Girl Magic into a searing modern tale of grief, power, and self-discovery" (Dhonielle Clayton, New York Times bestselling author of The Belles). After her mother dies in an accident, sixteen-year-old Bree Matthews wants nothing to do with her family memories or childhood...

From the #1 New York Times best-selling author of The Darkest Minds comes a sweepingly ambitious, high-octane tale of power, destiny, love, and redemption. Every seven years, the Agon begins. As punishment for a past rebellion, nine Greek gods are forced to walk the earth as mortals. They are hunted by the descendants of ancient bloodlines, all eager to kill a god and seize their divine power and immortality. Long ago, Lore Perseous fled that brutal...

A mysterious island. An abandoned orphanage. A strange collection of peculiar photographs. A horrific family tragedy sets sixteen-year-old Jacob journeying to a remote island off teh coast of Wales, where he discovers the crumbling ruins of Miss Peregrine's Home for Peculiar Children. As Jacob explores its decaying bedrooms and hallways, it becomes clear that Miss Peregrine's children were more than just peculiar. They may have been dangerous. They...

Shiori, princess of Kiata, has a secret: Forbidden magic runs through her veins. On the morning of her betrothal ceremony she loses control, and it forestalls the wedding she never wanted-- but it also catches the attention of Raikama, her stepmother. Using a dark magic of her own, Raikama banishes the princess, turns her brothers into cranes, and warns Shiori that with every word that escapes her lips, one of her brothers will die. Peniless, voiceless,...

"Nina is a Lipan girl in our world. She's always felt there was something more out there. She still believes in the old stories. Oli is a cottonmouth kid, from the land of spirits and monsters. Like all cottonmouths, he's been cast from home. He's found a new one on the banks of the bottomless lake. Nina and Oli have no idea the other exists. But a catastrophic event on Earth, and a strange sickness that befalls Oli's best friend, will drive their...