One hundred and fifty years ago, the first dinosaurs were cloned. Soon after, they replaced humans at the top of the food chain. The only way to survive was to move into underground compounds.... Five years ago, Sky Mundy's father vanished from North Compound without a trace. Now she has just stumbled on a clue that not only suggests his disappearance is just the tip of an even larger mystery but also points directly to the surface. To find her dad - and possibly even save the world - Sky and her best friend, Shawn, must break out of their underground home and venture topside.

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers - people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan’s future self, warning them about an impending disaster that threatens them and everyone they know.

Picket, Heather, Jo, and your favorite Green Ember heroes are back for a thrilling new adventure. In the days after their arrival at Halfwind Citadel, the friends are caught up in a desperate fight for the cause when an internal conspiracy threatens to unravel the growing strength of rabbitkind’s resistance.

After an experience he’d rather forget, Vincent is determined to be done with art. So when he and his little sister, Lili, spend spring break with their art conservator great-uncle, Vincent’s plan is to stay glued to his phone. That is, until Lili disappears into one of the world’s most famous paintings and Vincent learns his parents have been hiding something from him: Their family is the last of The Restorationists, a secret society with the power to travel through paintings—and a duty to protect them from evil forces.

A century before Heather and Picket's adventures in The Green Ember, a displaced community fights for hope on the ragged edge of survival. Whitson Mariner and Fleck Blackstar face old fears and new enemies, forging a legend that will echo through the ages.

Hank, Emerson, and their friends have returned to Camp Outlier for another summer of fun and shenanigans. Hank won’t let his RISK (Recurring Incident of the Strange Kind) factor of inconvenient invisibility stop him from having the best summer ever, even when it starts mysteriously turning people and objects around him invisible too. But between his invisibility and an internet celebrity joining their cabin, camp clown Hank is struggling to maintain his spotlight.

Eleven-year-old Lydia Green doesn’t want anything to change. She lives happily in Mulberry Glen with her mismatched family of a fairy guardian, a philosopher, and twin troublemakers known as the Zs. But now, rumors swirl about The Darkness, a powerful force that dwells in the forest Tenebrae. Lydia knows The Darkness is nothing to be trifled with, but when a foolish choice by the Zs puts her family in danger, she must leave home and face the strange magical world of The Valleylands.

When a mysterious little free library (guarded by a large orange cat) appears overnight in the small town of Martinville, eleven-year-old Evan plucks two weathered books from its shelves, never suspecting that his life is about to change. Evan and his best friend Rafe quickly discover a link between one of the old books and a long-ago event that none of the grown-ups want to talk about. The two boys start asking questions whose answers will transform not only their own futures, but the town itself.

Berkeley and her best friend, Garth, live on an old cruise ship, scavenging for supplies from the drowned cities left behind on the ocean floor after the sea swallowed up all the land. They think they’ve seen every kind of aquatic creature, but they never expected to find sea monsters.... After awakening a Hydra, Berkeley and Garth are sent to live on a submarine, where they study and hunt sea monsters. But the Hydra wants revenge on their home ship - and if it succeeds, their families will go down with it.

A taste of her own medicine. George is alone in the house with Grandma. The most horrid, grizzly old grunion of a grandma ever. She needs something stronger than her usual medicine to cure her grouchiness. A special grandma medicine, a remedy for everything. And George knows just what to put into it. Grandma's in for the surprise of her life - and so is George, when he sees the results of his mixture!