A winning ticket. A stolen horse. The adventure of a lifetime . . . ‘Superb storytelling.’ Phil Earle ‘Absolutely brilliant!’ Abi Elphinstone ‘Completely enthralling. A masterclass in mystery adventure.’ Piers Torday ‘Utterly magnificent.’ Judith Eagle ‘Glorious . . . passionate, intricate, totally immersive.’ Hilary McKay Orphaned Roo Thorn feels like the unluckiest girl in the world. Until she discovers a letter. A letter which urges her to ‘Grab life by the wings and fly.’ With the help of her aunt, Joni, Roo sets out to buy her dream horse – a fiery showjumper named Wonder Boy. Then Wonder vanishes without a trace. Determined to save him, Roo and Joni investigate his disappearance. But as the mystery deepens and more prize horses are stolen, the pair find themselves drawn into a thrilling – but dangerous – adventure . . . How far will they go, and what will they risk, to find Wonder?