“What do you think has happened to Derek?” Uncle Charlie puzzled this question a few moments before replying. “Two things could have happened. Dietz could have returned just as Derek knocked on the door, or when he was returning to our room.” “You mean he forced Derek to go with him?” “Yes. That could have happened.” “But wouldn’t Derek have called out? Yelled for help?” Biff protested. “Not necessarily. You see, Biff, Derek doesn’t know me any better than he knows Dietz. You two switching identities at the airport was a good joke. But then the joke turned into a serious matter.” “Right!” “I didn’t have enough time to fill Derek in on what was actually going on,” Uncle Charlie continued. “He can’t really be sure whether I’m working for him or against him. The same thing holds for Dietz. Dietz is a fast and smooth talker.” “I learned that, myself,” Biff said. “And Derek may have thought that you, by suggesting the switch in identities, might have been in on a plot for me to get my hands on him.” “I see. It could look that way. Look, Uncle Charlie, if you would tell me what this whole thing is all about, I might be more help.” Uncle Charlie apparently didn’t hear Biff’s last remark. He was deep in his own thinking. “Or, this could have happened,” he continued. From his tone of voice, Biff could tell that his uncle was more voicing his thoughts than speaking directly to him. “Derek might have felt that I was holding him. And after knocking on this door, he could well have gone right on down to the lobby intending to leave the hotel. Dietz might have seen him there.” “And told him you were a crook and that he would take Derek to his father.” Uncle Charlie nodded his head in agreement. “Look, Uncle Charlie, just where is Derek’s father?”