It was night in the city. Polly and her friends stood by a locked door. They felt their journey might end here. But Polly was very observant. She saw small carvings on the doorframe. These carvings were part of stories she knew from Adil. "Look here," Polly said with excitement. She pointed with her beak. "These stories talk about a key. It is hidden where the moonlight touches the ground at sunset." Leila and Omar looked at each other. They understood it was a riddle. The riddle showed a place in the city. There, the moonlight would show a hidden key. Quickly, they went back the way they came. Polly's instincts guided them. They reached a quiet courtyard. The moonlight showed a small mark in the stones. Leila put her hand inside the mark. She found an old, rusty key. They hurried back to the door. With hope, they tried the key. It turned easily. The door opened slowly. Behind it was a secret room. The room was full of old things. There were tapestries, scrolls, and in the center, the famous treasure of Sultan Malik.
