Luka is imprisoned in the Block when an audacious break-out reunites him with his friends at last. Hiding out in the heart of the destroyed city, Luka realises the scale of their mission to defeat all-powerful AI, Happy. How can they stay hidden, let alone win the war?

Arianwyn is recruited for an important mission: to retrieve the Book of Quiet Glyphs from its hiding place in the Great Wood. But as feyling refugees gather outside the town walls and hex plagues the forest, tensions lead to fall-outs with her friends. Arianwyn soon realises that she alone can find the Book, and wield its secrets ...

Syms Covington has landed the job of a lifetime on Charles Darwin's ship. But after being shipwrecked on a Galapagos island, he makes a discovery that could change the world - and make his fortune. Should he share his find, or will it lead to the extinction of a legendary species?

In a remote Nigerian village, twelve-year-old Simi is desperate to uncover a family secret. But it's when she's caught in the red quicksand of a forbidden lake that her adventure truly begins. Can she bring her family back together and restore peace to the village?

Ever since the accident, Tom's struggled with his mobility. But he has a secret escape: Skylark, his drone. It's through Skylark that he stumbles upon a terrorist plot - but can he stop it in time?

England, 1605. Twelve-year-old Tom must save his father from hanging. He falls in with a mysterious stranger, the Falcon, who promises to help - but can he be trusted? Soon, Tom faces a terrible mission: secure his father's release and stop the assassination of the king ...

Britain is on the brink of invasion. George is sent to the countryside while his brother and guardian, Charlie, trains to be a pilot. But the war is closer than he thinks. Nearby, an ancient burial ground hides a treasure Hitler is desperate to possess. George must find and protect it before it's too late ...

Twelve-year-old Vinnie Fyfe works in the tea-shop at Brighton aquarium, and waits for her milliner mother to return from Paris. The arrival of a giant octopus changes her life for ever as a gripping mystery begins to unfold .