Rainbow Dust and the Dueno is the third book in the Rainbow Dust series by SJ Dawson. Lucy the unicorn receives a message from the magic woodland fairy. Their land is being destroyed and she needs Lucy's help. The invisible barrier between their magical world and the world outside is breaking down and a Dueno has crept inside. The woodland animals believe that he is responsible for the destruction and go on a quest to track him down. They find the Dueno but all is not quite as it seems. Can Jessica and Lucy save the woodland and the Dueno? You can read Jessica and Lucy's earlier adventures in 'Rainbow Dust' and 'Rainbow Dust and the Moon'.