As the Council attempts to strip Charlotte of her power, sixteen-year-old orphaned shapechanger Tessa Gray works with the London Shadowhunters to find the Magister and destroy his clockwork army, learning the secret of her own identity while investigating his past.

"The threat of Mortmain's Infernal Devices looms as the Shadowhunters race to work out a way to counteract the mechanical monsters. Meanwhile, plans for Tessa's marriage to Jem are underway, despite her fiancé's failing health and the unresolved feelings between her and Will. When Tessa is captured, Will must leave his comrade behind to save the woman they both love... But with the final missing piece-Tessa herself-in Mortmain's possession, can...

The two kids were last seen in Egypt, hunting for one of the 39 Clues that could make them the most powerful people on earth. But no one has seen the siblings since. Has the ruthless Irina Spasky finally tracked them down? Or worse-- the Madrigals?

Grace Blakely believed that finding the truth about her mother's murder would finally give her peace, but now she knows that it is only the beginning of the secrets that will dominate her life--and make her a target on Embassy Row in Adria.

When 16-year-old Tessa Gray crosses the ocean to find her brother, her destination is England, the time is the reign of Queen Victoria, and something terrifying is waiting for her in London's Downworld, where vampires, warlocks, and other supernatural beings stalk the gaslit streets. When sixteen-year-old orphan Tessa Fell's older brother suddenly vanishes, her search for him leads her into Victorian-era London's dangerous supernatural underworld,...

When sixteen-year-old Avery West learns her family is part of a powerful and dangerous secret society, and that her own life is in danger, she must follow a trail of clues across Europe.

Horace F. Andrews, armed with a strange wooden box, and Chloe Burke, wearing a mysterious dragonfly pendant, become entangled in a secret and ancient society striving to protect powerful devices from the evil Riven.

When their parents' seedy old motel burns down on the same night they are visited by a strange man covered in skeleton tattoos, Cyrus, Antigone, and their brother Daniel are introduced to an ancient secret society, and discover that they have an important role in keeping it alive.

Rye O'Chanter has seen a lot of strange things happen in Village Drowning. She and her friends have grown up on Drowning's treacherous streets -- its twisted rooftops and forgotten cemeteries are their playground. Now a terrifying encounter on the night of the Black Moon has Rye convinced that the monstrous, supposedly extinct Bog Noblins have returned from the forest Beyond the Shale. There's nobody left who can protect the village. There was once...

Following the epic penultimate conclusion of The Secret Society, Oliver, Mya, and Jorge find themselves at an impasse: The Protectors' headquarters lie in ruins; the nefarious Octavian is nowhere to be found; and they have no idea how their tampering with the timeline of Poptropica might affect history. As our heroes band together to save the mysterious, uncharted island world and find a way home, they are reminded of crucial events from their pasts-including...