A visitor appears every night in the bedroom of the family’s youngest member and makes him tremble, but is it from fear or excitement? Enthralling to the last page, del Mazo’s books and their illustrations by Natalia Colombo take on the fear that young children have of the unknown, helping them to deal with situations they cannot control and to face up to their fears. Full of suspense but also great fun, the reader will never forget these stories.