Shift — Zack Mason

What is the worst thing that could happen to you? For Mark Carpen, it is the death of his children at the hands of a drunk driver. In the tragic aftermath, he also loses his wife, his job, and everything else of value. Grief-stricken, Mark turns his back on society for a life wandering through the North Georgia woods. That is, until he finds a strange watch in the middle of those woods. A very special watch. One that gives its wearer the power to travel through time at will, rectifying past wrongs and stopping tragedies before they happen. Mark is determined to use the watch to save his kids, yet certain mysterious forces are poised to stand in his way - and a shadowy group of assassins has decided that Mark Carpen must die.