A collection of adventure books aimed at children aged 7+. Over 120 pages of fun, adventure and mystery with full-colour illustrations. “Hello! My name is Txano and my twin brother is called Óscar. Have you ever seen a falling meteor? Well, we have. When we were on a day trip in early summer, a huge fireball crossed the sky right in front of our eyes and crashed into the forest! Yes, I know we should have run in the opposite direction, but we didn't. We went looking for it…and we found it! It was a strange green stone. The secret behind its glow changed our lives forever. Are you coming to discover it with us?” The digital version of The Green Stone was shortlisted from more than 100,000 works in the 2017 Wattys Awards and has been downloaded over 500,000 times on Amazon and PlayStore.