Plots, spies and inventors abound in an epic adventure set between London and Paris … At her dull Victorian academy, fourteen-year-old Winnie dreams of becoming a top inventor like her father. When he mysteriously vanishes, she is determined to find him – but how? Help comes unexpectedly from her headmistress.

Turns out, her school is recruiting remarkable young women to guard Her Majesty the Queen. Soon, Winnie is not only protecting royalty – but developing the spy skills she needs to save her beloved Papa. A debut Victorian romp and the winner of the Times/Chicken House Institution of Engineering and Technology Prize, 2021 A celebration of girls in STEM – and the hurdles they overcome Combines fact and fiction: the novel draws on real-life historical inventions and events Perfect for readers aged 9 and up