Harper lives in the City of Clouds, an enchanting place where it rains every day and an umbrella is always a good idea. With her aunt Sassy, her beloved cat, Midnight, and all of her neighbors in the Tall Apartment Block, every day is full of possibility. But when every cat in the city goes missing - including Midnight - Harper is determined to find all of the precious pets. And she’ll need a magic, flying umbrella to help in her search.

Follow the adventures of Zoey and her cat, Sassafras, with this collection of books one to six in the series. Each story features a new magical animal with a problem that must be solved using science. There isn’t a set formula for each book; Zoey sometimes needs to run experiments, while other times she needs to investigate a mystery, and yet other times she needs to do research. Zoey models how to keep a science journal through her handwritten entries in each story.

Can a robot survive in the wilderness? When robot Roz opens her eyes for the first time, she discovers that she is alone on a remote, wild island. She has no idea how she got there or what her purpose is - but she knows she needs to survive. After battling a violent storm and escaping a vicious bear attack, she realizes that her only hope for survival is to adapt to her surroundings and learn from the island's unwelcoming animal inhabitants. As Roz slowly befriends the animals, the island starts to feel like home - until, one day, the robot's mysterious past comes back to haunt her.

In the first book in this series, eight-year-old Drake is snatched up by King Roland's soldier and taken to the castle. He is to be trained as a Dragon Master. At the castle, he is joined by three other young Dragon Masters-in-training: Ana, Rori, and Bo. The Dragon Masters must learn how to connect with and train their dragons - and they must also uncover their dragons' special powers.

Every year the people of the Protectorate leave a baby as an offering to the witch who lives in the forest. They hope this sacrifice will keep her from terrorizing their town. But the witch in the forest, Xan, is kind and gentle. She shares her home with a wise Swamp Monster named Glerk and a Perfectly Tiny Dragon, Fyrian. Xan rescues the abandoned children and delivers them to welcoming families on the other side of the forest, nourishing the babies with starlight on the journey.

Sally Skellington is the official Pumpkin Queen after a whirlwind courtship with her true love, Jack, who Sally adores with every inch of her fabric seams—if only she could say the same for her new role as Queen of Halloween Town. She can't help but wonder if all she's done is trade her captivity under Dr. Finkelstein for a different cage. But when she and Zero accidentally uncover a doorway to an ancient realm called Dream Town, she'll unknowingly set into motion a chain of sinister events that put her future as Pumpkin Queen, and the future of Halloween Town itself, into jeopardy.

Firedrake, a young dragon, receives a frightening warning one night: Humans are planning to destroy the valley in which he lives! All the dragons must flee. Their only refuge is a place above the clouds called the Rim of Heaven - which may not even exist. Firedrake boldly volunteers to go ahead first. As he embarks on his journey, he meets Ben, a runaway boy.

Osmo Unknown hungers for the world beyond his small town. With the life that Littlebridge society has planned for him, the only taste Osmo will ever get are his visits to the edge of the Fourpenny Woods where his mother hunts. Until the unthinkable happens: His mother accidentally kills a Quidnunk, a fearsome and intelligent creature that lives deep in the forest.

It's 1895, and after the suicide of her mother, 16-year-old Gemma Doyle is shipped off from the life she knows in India to Spence, a proper boarding school in England. Lonely, guilt-ridden, and prone to visions of the future that have an uncomfortable habit of coming true, Gemma's reception there is a chilly one.

Being the heir to Camelot is a tangled mess. Rapunzel has spent her entire life living in Merlin's cave on the coast of Cornwall. Under the protection of her faerie guardian, Gothel, she's stayed safe. Safe and bored. Dreaming of a life that looks more like a Jane Austen novel, Rapunzel fears she'll never have the chance to explore Victorian England's modern delights. Or meet a man. Or be kissed. Or anything else remotely resembling normal.

In a see-through land our reflections live. They call us Sounds. They are our Echoes. And they think that they must die when we do. Is this why children are disappearing from the Sound realm? Because someone wants their Echo to die? Twelve-year-old Will Cleary tries to escape the frightening answer. But dangers sweep him into that magical, see-through land. And there, in a fortress filled with castaway children, a 200-year-old riddle lies buried.

Twelve-year-old Mary Hayes can't stand her orphanage. But when an attempted escape doesn't go quite as well as she'd hoped, Mary fears she'll be stuck in the Buffalo Asylum for Young Ladies forever. The very next day, a mysterious woman named Madame Z appears at the orphanage requesting to adopt Mary. The matron's all too happy to get the girl off her hands. Soon Mary is fed a hearty meal, dressed in a clean, new nightgown, and shown to a soft bed with blankets piled high.

When Clara Stahlbaum receives a beautiful yet mysterious egg-shaped box from her late mother, she wonders what it means. Searching for answers, Clara soon finds herself in a magical world - the Four Realms - where she meets a host of colorful and curious new friends and discovers the fascinating link between the Realms and her dear mother. But when she learns that the Realms are in danger of being destroyed, Clara vows to help. Years earlier, Clara’s mother, Marie, is a lonely orphan adopted by an eccentric inventor.

Echo Alkaev's safe and carefully structured world falls apart when her father leaves for the city and mysteriously disappears. Believing he is lost forever, Echo is shocked to find him half-frozen in the winter forest six months later, guarded by a strange talking wolf - the same creature who attacked her as a child. The wolf presents Echo with an ultimatum: if she lives with him for one year, he will ensure her father makes it home safely. But there is more to the wolf than Echo realizes.

Amy's grandmother, Lady Mairead, insists that Amy must read while she resides at Lennox House - but not in the usual way. It turns out that Amy is a book jumper, able to leap into a story and interact with the world inside. As thrilling as Amy's new power is, it also brings danger: someone is stealing from the books she visits, and that person may be after her life. Teaming up with fellow book jumper, Will, Amy vows to get to the bottom of the thefts - at whatever cost.