Book 4 in the Armor of God children's chapter book series.

While George and the other pages work hard at Knight School, learning how to earn the Shield of Faith, Robyn notices several knights have gone away. She suspects they've gone to investigate the dragon sightings.
Before George and his friends can learn more, Sir Lucian invites George and his little brother, Erik, on a secret mission that answers questions George has been wondering ever since he first became a page. When George finds himself in a tight situation, he'd rather have a lantern than faith. He's not the only one facing a challenge. Each page—anxious to earn the Shield of Faith—is tested before the day is out.
Based on the Scriptural Armor of God (Ephesians 6:13-17), the six-book ARMOR OF GOD series appeals to the universal and timeless quest for virtue and inner strength. The story themes and "Brother Coll's Catechism Lessons," weaved into each story, are perfect for children preparing for or who have recently made their First Confession and First Holy Communion.