Maggie's parents send her to freezing Cornwall to stay with her grandfather, a doctor, who she hardly knows. Here, she stumbles upon an abandoned young snow leopard in the woods. But once the cub's presence is discovered by others, danger follows .

Xanthe loves visiting her Nani in her tower block flat. Then, Nani is diagnosed with dementia. Xanthe is determined to help but doesn't know how - until a mysterious cat leads the way to the truth about Nani's refugee past ...

When high-born Vita's father is murdered in Roman Londinium, Vita is forced to disguise herself as a slave at the gladiator's arena. Here she forges an unlikely bond with Brea, a native Briton gladiatrix. Together, they resolve to bring the killer to justice before Vita is discovered ...

Railey dreams of winning the drone races with her bio-robotic gecko friend, Atti. But when a bounty hunter crashes their biggest race yet, the pair are forced to flee skywards. The danger is bigger than anything they'd imagined: a huge trash bomb, and its power-crazed creator, threaten to destroy the world ...

When Hedy and Spencer start receiving messages on dusty picture frames, Christmas at their grandfather's spooky house turns into a mission to solve an old family mystery. Their grandmother disappeared during a magic performance many years ago - but where did she go? Hedy and Spencer set out to find the truth.

Violet's in her element - cosplay at the ready, she can't wait to feel part of her favourite fandom: The Gallows Dance, a mega book and movie franchise. But when a freak accident transports her into the story for real, can Violet play out the plot the way it was written?

Seth is the oppressed kitchen boy at the remote Last Chance Hotel. But when a strange gathering of magicians arrives for dinner, their leader is poisoned. A locked-room murder investigation ensues - and Seth is the main suspect. Can he solve the mystery and clear his name, especially when magic's afoot?

When his master disappears and a slave called Tog arrives with a secret message, Cadmus is swept up on a quest that leads to Emperor Nero and his crazed determination to possess the Golden Fleece of Greek mythology. The journey will push him to the edge of the Roman Empire - and reveal unexpected truths about himself ...