Flick and Jonathan have faced countless dangers in their roles as part of the Strangeworlds Society and come out alive on the other side. But what do they really know about the Society they are risking their lives for? Why does it exist? Who is Strangeworlds there to protect? And what in the worlds is happening to the multiverse now? With worlds everywhere under threat of collapse and mysteries abounding, it's up to Flick and Jonathan to discover the answers to these questions. 

Willow Moss, the youngest and least powerful sister in a family of witches, has a magical ability for finding lost things - like keys, or socks, or wooden teeth. Useful, but not exactly exciting. Then the most powerful witch in the world of Starfell turns up at Willow’s door and asks for her help. A whole day - last Tuesday to be precise - has gone missing. Completely. And, without it, the whole universe could unravel. Now Willow holds the fate of Starfell in her rather unremarkable hands. Can she save the day - by finding the lost one?

Eleven-year-old Casper Tock hates risks, is allergic to adventures and shudders at the thought of unpredictable events. So, it comes as a nasty shock to him when he accidentally stumbles into Rumblestar, an Unmapped Kingdom full of magical beasts. All Casper wants is to find a way home, but Rumblestar is in trouble. An evil harpy called Morg is sending her followers, the Midnights, into the kingdom to wreak havoc and pave the way for her to steal the Unmapped magic for herself.

Cordelia comes from a long line of magical milliners, who weave alchemy and enchantment into every hat. In Cordelia's world, Making - crafting items such as hats, cloaks, watches, boots and gloves from magical ingredients - is a rare and ancient skill, and only a few special Maker families remain.

Thousands of years ago, the Evernight came to the Silver Kingdom and turned everything to darkness and chaos. It was defeated thanks only to the skill and bravery of the Witches. But now, the Evernight is about to return, released by the evil Mrs Hester, and the only spell that might stop it is lost, deep below the great city of King’s Haven. Larabelle Fox stumbles across a mysterious wooden box while treasure hunting in the city’s sewers. Little does she realise she is about to be catapulted into an adventure, facing wild magic and mortal danger - and a man who casts no shadow.

Way out in the furthest part of the known world, a tiny stronghold exists all on its own, cut off from the rest of human-kin by monsters that lurk beneath the Snow Sea. There, a little boy called Ash waits for the return of his parents, singing a forbidden lullaby to remind him of them...and doing his best to avoid his very, very grumpy yeti guardian, Tobu. But life is about to get a whole lot more crazy-adventurous for Ash.

Eleven-year-old Tilly has lived above her grandparents’ bookshop ever since her mother disappeared shortly after she was born. Like the rest of her family, Tilly loves nothing more than to escape into the pages of her favourite stories. One day Tilly realises that classic children’s characters are appearing in the shop through the magic of ‘book walking’ - crossing over from the page into real life. 

Sixteen-year-old Seleska never meant to cause any trouble when she rescued a baby dragon on the beach. After all, she'd been rescued as a child by a dragon and didn't that mean that she owed their kind a debt? But now her new dragon friend has gotten her in a lot of trouble and if she doesn't find a way to help him, the whole world might fall apart. Magic is slowly draining from their land, and with its loss, enemies appear, intent on taking every bit of 

Molly Pepper, daughter of brilliant but unknown inventor Cassandra Pepper, lives with her mother in New York. By day, they make ends meet running a pickle shop; but by night, they toil and dream of Cassandra taking her place among the most famous inventors in America. In an attempt to find a way to exhibit Cass’s work at the World’s Fair, they break into the Inventor's Guild, where they discover a mysterious plot to destroy New York.

It is midnight in Crackledawn—a midnight full of magic. Sea dragons stir in the depths of the ocean, silver whales surface beneath the moon and sand goblins line the shores. Everyone is waiting for the phoenix, the guardian of the kingdom’s magic, to rise up from the forests of Everdark. But there is no sign of the phoenix tonight. Something else surges up out of Everdark instead: a harpy bent on stealing Crackledawn’s magic.

When Arthur and Rose were little, they were heroes in the Land of Roar, an imaginary world that they found by climbing through the folding bed in their grandad’s attic. Roar was filled with things they loved - dragons, mermaids, ninja wizards and adventure - as well as things that scared them (including a very creepy scarecrow).... Now the twins are 11, Roar is just a memory. But when they help Grandad clean out the attic, Arthur is horrified as Grandad is pulled into the folding bed and vanishes. Is he playing a joke? Or is Roar...real?

In all the years that Elinora Gassbeek has been matron of the Little Tulip Orphanage, not once have the Rules for Baby Abandonment been broken. Until the autumn of 1886, when five babies are left in outrageous circumstances: one in a tin toolbox, one in a coal bucket, one in a picnic hamper, one in a wheat sack and finally, one in a coffin-shaped basket. 

In the snowy kingdom of Erkenwald, whales glide between icebergs, wolves hunt on the tundra and polar bears roam the glaciers. But the people of this land aren’t so easy to find - because Erkenwald is ruled by an evil Ice Queen, and the tribes must stay hidden or risk becoming her prisoners at Winterfang Palace. Join Eska, a girl who breaks free from a cursed music box, and Flint, a boy whose inventions could change the fate of Erkenwald forever, as they journey to the Never Cliffs and beyond.

When Fionn Boyle sets foot on Arranmore Island, it begins to stir beneath his feet.... Once in a generation, Arranmore Island chooses a new Storm Keeper to wield its power and keep its magic safe from enemies. The time has come for Fionn’s grandfather, a secretive and eccentric old man, to step down. Soon, a new Keeper will rise. But deep underground, someone has been waiting for Fionn. As the battle to become the island’s next champion rages, a more sinister magic is waking up, intent on rekindling an ancient war.

Nine is an orphan pickpocket determined to escape her life in the Nest of a Thousand Treasures. When she steals a house-shaped ornament from a mysterious woman’s purse, she knocks on its tiny door and watches it grow into a huge higgledy-piggeldy house. Inside she finds a host of magical and brilliantly funny characters, including Flabberghast - a young wizard who’s particularly competitive at hopscotch - and a hideous troll housekeeper who’s emotionally attached to his feather duster. They have been placed under an extraordinary spell.