Ever since the sudden deaths of his parents, seventeen-year-old Hugh has developed a serious preoccupation with endings. And when he discovers that high-school outcast Olivia Moon can't die, things start to get a little complicated ...

Christopher is 'Proper': a real boy with a real soul, orphaned in a fire. He works for an engineer, a maker of the eccentric, loyal and totally individual mechanicals who are Christopher's best friends. But after an accident, Christopher realizes he isn't as Proper as he thought ...

A trickster who calls himself 'the Mouse King' is playing a deadly game with Swan House, the ballet school for spies. As Milly navigates her second term, the mystery thickens - but will she let jealousy cloud her judgement?

Will Burrows has a passion for digging, but when his father disappears down an unknown tunnel, Will's investigation leads him to a terrifying underground world.

Divorce is tough for any kid. But while Violet's ex-secret service mum and retired bad-guy dad are distracted by each other, the real super-villains are having a field day. To save her family - and the planet - from evil domination, Vi must turn spy ...

Vi is failing at top spy school Rimmington Hall - but worst of all, her shadowy nemesis Umbra is still at large. Can Vi unveil the arch-villain before she gets expelled and her parents ground her for ever?

Vi has tried to save the Earth before ... and failed. Now, she faces an even bigger stress: her Gran is seriously ill. But Vi's not ready to give up just yet. She, Gran and the entire family blast off - together - on the rocket-ride of their lives.

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 ...