A compelling and funny new whodunit with a strong girl heroine--for fans of Book Scavenger, Greenglass House, and The Mysterious Benedict Society. Math whiz Ali

Maths-whizz Alice has already solved a mystery or two. Persuaded by wannabe sidekick Sammy to investigate a scientist's disappearance, she's soon entangled in h

A ballerina tale with a thoroughly modern twist! Casey Quinn has got more grace in her pinkie toe than all those prissy ballet-school girls put together, even i

*Shortlisted for the 2019 Royal Society Insight Investment Science Book Prize* One of the most fascinating scientific detective stories of the last fifty years,

"Twelve-year-old William Wenton is a puzzle-solving genius. He lives with his family in a quiet Norwegian town. They used to live in England, but eight years ag