Michael Ellison
The story revolves around a man trying to uncover the mysterious death of his girlfriend and save an innocent man from the death chamber in the process, by using his unique power to time travel. However in attempting to do this, he also frees a spiteful serial-killer.
When a young soldier in Vietnam gets dumped by his hometown girl, he and his best friend decide to go AWOL and return to the States to win her back.