Rewinder

You will never read Denny Younger’s name in any history book, will never know what he's done. But even if you did, you’d never believe it.The world as you know it wouldn't be the same without him. Denny
was born into one of the lowest rungs of society, but his bleak
fortunes abruptly change when the mysterious Upjohn Institute recruits
him to be a Rewinder, a verifier of personal histories. The job at first
sounds like it involves researching old books and records, but Denny
soon learns it's far from it. A Rewinder's job is to observe history.In person.Embracing
his new life with enthusiasm, Denny witnesses things he could never
even imagine before. But as exciting a life as this is, there are
dangers, too. For even the smallest error can have consequences. Life-altering consequences. Time, after all, is merely a reference point.