Futsal is one of the fastest-growing sports on the planet: over 60 million people play this lightning-fast and tactically intricate variation of indoor football. Despite its growing status, however, futsal's history remains largely unknown and untold. Jamie Fahey is a leading futsal expert and qualified youth coach and in Futsal: The Story of the Indoor Football Revolution, he makes the case for futsal's transformative grassroots effect, both in the UK and abroad. He also tells the story of futsal's politics, tactics and personalities - and in doing so, illuminates a hidden corner of sporting history.