An unlikely hero.

Stephen White is a nerdy young software engineer in a little Midwest town where nothing ever happens. He's more interested in plopping down on his couch and watching television than in seeking out anything even remotely adventurous. Adventure finds him, though, during a hiking trip with friends. He gets light-headed on the trail and passes out, only to awaken and find that he's somehow travelled into the past.

A journey through time.

How can this be possible? Is it real, or some kind of vivid fever dream? Struggling to come to grips with this new reality, Stephen is flung headlong into a series of dizzying adventures through yesteryear--on a murderous run with 1860s outlaws, at a Russian execution, beside the stations of the Via Dolorosa--each more dangerous than the last. He has no idea when the next journey will begin, and no clue as to how to stop it. All he knows is that it will happen...

Time and time again.