In the far reaches of our solar system, beyond what any telescope has ever revealed, there are worlds humanity has never discovered. Five hidden planets. Five ancient civilizations. And Earth was never meant to find them. On Hidden Planet Two — Threa , the warning signs have begun. Earth’s scientists are looking deeper into space than ever before, and the people of Threa know the truth: discovery is coming. But Threa has been preparing. Long ago, they began sending engineered travelers to Earth—individuals designed to live among humans, to blend in, to study this unpredictable world and its inhabitants. They watched. They learned. They waited. Then came the next phase. They sent their most delicate creations. Their greatest risk. Children. Known as the Youngest Arrivals , these extraordinary children were placed on Earth to grow up as humans, hiding abilities and secrets they barely understand themselves. But Earth is changing. Questions are being asked. And some secrets can’t stay hidden forever. As the Youngest Arrivals begin to awaken to who—and what—they truly are, they must decide where they belong: the planet that created them… or the one they now call home. The fate of two worlds may depend on their choice. Secrets from the Sky is the thrilling first installment of The Youngest Arrivals Series by C. Barbera —a captivating blend of science fiction, mystery, and adventure that will leave readers looking up at the night sky and wondering what might be looking back. Perfect for fans of The 100, Ender’s Game, and Stranger Things .