Isaac Asimov's Foundation novels are one of the great masterworks of science fiction. As unsurpassed blend of nonstop action, daring ideas, and extensive world-building, they chronicle the struggle of a courageous group of men and women dedicated to preserving humanity's light in a galaxy plunged into a nightmare of ignorance and violence thirty thousand years long. 

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Mary can't see properly, but she's fed up with not being allowed to go anywhere by herself. She sets off alone, but she stumbles into a nightmare when a robbery goes wrong and she is kidnapped and held hostage.

Nightmare Academy

Nightmare Academy is a coming-of-age story mixing reality and mystery. Charlie Benjamin would be an average thirteen-year-old except for his unusual situation and "gift." Even in his new world, Charlie has issues fitting in and his "abnormality" pushes him into an adult role. The book's tone is humorous and light even when violence arises and devotion to family and friends is shown. This book is written for ten and up and presents fantasy with a comic touch reminiscent of the Harry Potter series.

It's the monster hunters' last chance to stop an all-out monster war!
We're under attack! The last of the mega-monsters known as the Named are fighting their way into our world, and only a mysterious being known as the Guardian can help—but the Guardian is dying. To save him, Charlie Benjamin and his friends from the Nightmare Academy must journey into the heart of a Hydra cave, through the spooky Bermuda Triangle graveyard, and across the treacherous, monster-filled San Diego Zoo.

The Nightmare Garden (2012)(The second book in the Iron Codex series)

Everything Aoife thought she knew about the world was a lie. There is no Necrovirus. And Aoife isn't going to succomb to madness because of a latent strain - she will lose her faculties because she is allergic to iron. Aoife isn't human. She is a changeling - half human and half from the land of Thorn. And time is running out for her.