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 McKayOrphaned 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?