Alphabet of Lightning

History is now... Humanity has brought itself back from a global nuclear war, inventing a perpetual source of clean energy. But a rogue soldier uses the accelerator to go back in time, wanting to become a god. The locals will whisper his name for centuries-the Crooked Man. The one tasked with stopping him must learn the rules of time travel as he goes, waking up in the body of a disabled ancestor in the 1920s. But there's just something about Shamus Connelly that draws friends close. So begins . . . There Was a Crooked Man