Yestertime Books in Order

The Yestertime books begin with one of Andrew Cunningham's cleanest hooks. Journalist Ray Burton finds an old trunk hidden near the Arizona ghost town of Hollow Rock, and inside is a note that should not exist, along with modern items that make even less sense in a 19th century cave. From there, the series opens into a time travel story built around natural portals, stranded travelers, and the uneasy idea that history may be less stable than anyone wants to believe.

Ray is the main entry point, but he is not the only person caught up in this mess. Natalie O'Brien becomes central to the story, and later books widen the circle to other people who have slipped into the wrong year and have to figure out how to survive there. Some come from the future. Some land in the past by accident. Some know more than they should, and some are only trying to get home.

That is what gives the series its shape. These are not books about people treating time travel like a clever game. Cunningham keeps bringing the story back to the human cost. What happens when you are trapped in a year that is not yours? How do you explain yourself, earn trust, or stay alive when the rules, technology, and social habits around you have all changed? Even when the plot gets bigger, the series still works best at that personal level.

The later books widen the scope without losing the core idea. Ray and Natalie are joined by new travelers, including people who stumble into portals at the worst possible moment and others who are already moving through time with complicated motives. By the time the series reaches books like The Yestertime Shift and The Yestertime Fracture, the story is stretching across multiple eras at once, with old mysteries, new threats, and growing signs that the portals themselves may be changing.

It stays readable, though.

The tone lands somewhere between science fiction thriller and character-first adventure. There is danger, pursuit, and a steady sense that somebody is always one step behind the truth. But there is also a practical streak to the books that makes them easy to sink into. Cunningham is interested in the mechanics of being lost in time, but he is just as interested in loneliness, adaptation, loyalty, and the strange relief of finding even one person who believes your impossible story.

If you like time travel novels that move quickly but still stop to think about consequence, this series is the Andrew Cunningham line to try first. The hook is big, the stakes keep widening, and the real tension comes from watching ordinary people deal with a discovery that can break their lives as easily as it can change history.