As Starlings returned to their classroom after playing outside they had quite a surprise! The room was dark and there was a trail of dusty silver footprints across the floor. Hanging on the cupboard was a silver suit and a torch and standing on the floor were some boots covered in silvery dust. There were silvery rocks left in a pile. Who could have been into the classroom? He had even left a book for the children. Starlings tried to work out who had visited the classroom. What a mystery!