Football detectives are faced with the biggest mystery of their careers: is it possible to win a match without scoring a single goal? How about two matches? What about the tournament? Sometimes an own goal means a lot more than it seems at first glance. Writer Roberto Santiago worked as a television scriptwriter, editor and producer. The football detective series has become a real cultural phenomenon, and is one of the best-selling books in Spain. They have been translated into different languages of the world, and in 2018 they were even filmed. For primary school age.