Suddenly, Sam saw something out of the corner of his eye. Swoosh! Another mouse landed gracefully on the floor right in front of him! “Whoa!” she said. “That was some ride. Good thing I had my parachute.”She stuck out her paw and smiled. “Hi, my name’s Sarah. What’s yours?”“I—I’m Sam,” he answered. “I live here!”“I live here, too,” Sarah said, “on the other side of the library. I was exploring, and that’s when I discovered that playground!”“Playground?” said Sam.