Leonard stared at the empty desk and whispered, "Where did my science notebook go?" His friend Jenny suggested, "Maybe it fell somewhere nearby." Leonard inspected under his chair, searching every corner carefully. He smiled, "A good detective never gives up!" They noticed little muddy footprints under the table. "Let’s follow these clues!" Leonard exclaimed with excitement.

They tiptoed out, following the tiny footprints into the bustling hallway. Leonard pointed, "Look, the clues turn left!" Jenny giggled, "Detective Leonard is on the case!" The prints stopped near the art room door. "Someone must have passed through here," Leonard said confidently. They peeked inside carefully, ready for their next clue.

Inside the art room, paint sticks and brushes were everywhere. Leonard looked closely at the floor. "The footprints are gone!" he whispered. Jenny found a scrap of paper under a desk. "Is this from your notebook?" she asked. Leonard grinned, "We’re getting closer!"

"Let’s ask Mr. Chan if he saw anything," Jenny suggested. They found their art teacher, Mr. Chan, washing his hands. "Did anyone come in just now?" Leonard asked politely. Mr. Chan nodded, "Yes, there was a boy with muddy shoes." Leonard’s eyes sparkled, "Who was he?" Mr. Chan replied, "It was Tom from class 4A."

They found Tom by the playground swings. "Hi Tom, did you see a science notebook?" Leonard asked. Tom nodded, "I thought it was mine and took it by accident." He handed the notebook back, smiling sheepishly. "Thanks for being honest!" said Jenny. Leonard grinned, "The case is solved!"

Leonard thanked Tom and promised, "Let’s put our names on our notebooks next time!" Jenny laughed, "Great idea, Detective Leonard!" Tom agreed, "I’ll be more careful from now on." They all high-fived happily. "Another mystery solved by teamwork!" Leonard declared. The friends cheered together on the playground.

"What will your next case be, Detective Leonard?" Jenny wondered. Leonard winked, "I hear someone’s lunchbox is missing!" Tom giggled, "Let’s investigate after recess." The friends set off, excited for their next adventure. Leonard felt proud to help his classmates. He couldn’t wait to solve more mysteries.

Leonard said, "If anyone needs help, Detective Leonard is always ready!" Jenny added, "You’re the best detective in school!" Tom smiled, "Let’s solve mysteries together." They skipped back to class, laughing and sharing stories. Leonard knew every day could hold a new adventure. He loved being a detective.