Jack Tucker, THE time traveler, has returned and jotted down how he first began his journeys through 70,000 years of the past, present, and future.Dealing with the bubonic plague, an alien invasion, a presidential assassin, a direct attack on the space program, and dinosaurs on the same day as the Oklahoma City bombing, he learns about his ability to travel in time, though he doesn't believe in time as a universal constant.Meeting people across history...