I found this book all rather depressing. A Maine English teacher (Jake Epping) discovers a portal that takes him back in time (after talking to his diner managing friend). After a lot of thought, he decides to save JFK from his death in Dallas. We then watch as he spend the ensuing 6 years biding his time waiting to save Jack Kennedy's life.

As I said, I found the book rather depressing for a number of reasons. First, it takes a good while for the book to get to a point where Kennedy's saveable (which made the book a bit overlong, to me at least). Second, the non-Kennedy story was all rather sad with Epping seemingly moving from one tradegy to the next. Finally, the ensuing descriptions of the Dallas Fort Worth Metroplex made the residents seem mean spirited, which it something they aren't.

All in all, it's not a bad book, just rather depressing.