One day, after a very hard week at school, I decided to go to my dad's office. He works near my school. When I arrived, the car wasn't in front of the business building. I thought he had gone there by foot, but I was wrong. Happily, I opened the door of his office and I screamed out loud: "Surprise!" When I came in... I realised that the room was empty. I looked for his things, but I didn't find them anywhere. Suddenly, the door closed. I was scared and didn't know what to do. I tried to open it. Unfortunately, someone locked it. Great! I was in my dad's office alone. After a while, a wonderful idea showed up. I tried to call my dad, but he didn't answer. I tried to call my mum, too. She didn't answer, either. "What happened to those people?" I said. I heard strange voices talking. Then, I called the police. And, of course, my phone turned off. It always does that when I really need it. Nothing happened for a few hours and I got bor...