The Adventures of Mark Spinner - The Detective

...Nobody heard from John Drek even after months passed. In fact, years later, when Mark chanced upon John Drek, he would come to realize how lucky he had been that day, and that John Drek had wrongly become the victim just because of a small timing error... ...When they reached the hut, the driver got off and went into the little building. A few minutes later he returned with a rifle in his hand. “Get out, kiddo!” Mark thought that all the warnings he had heard from adults until that moment had to be true. He got off the truck in fear. The man shouted, “Mark Spinner, you won’t be able to be a rival anymore! No one can prevent me from changing the world!” ... Half an hour later, he was inside the time capsule ready to go back ..... He had worn clothes suitable for that era and put in his backpack a few tools he might need. They didn’t allow him to take a weapon. The countdown for time travel soon began...