Briefcase Mystery

Eric is a sixteen-year-old closing in on his seventeenth birthday. He and his mother live in a mobile home twenty minutes outside of a medium-sized city beside a lake. They have been down on their luck for over a year since Eric's father passed away. Eric has a part-time job as a fork truck driver at a warehouse to help with the expenses. He is one year from graduating high school. One night after work, he sees a mysterious incident where a man sets a briefcase on a small boat dock, and a few minutes later, another man comes down from the trees to pick it up. He cannot rest until he finds out what the answer to the briefcase incident is.