I was lied to, and it goes deeper than I originally thought. (Beware of other reviews. I haven't read all of them, but you'll see why I give this warning later).
Spoilers ahead.
(Also, this was 2.5 at best, but I rounded up to be nice).
So, I decided to pick up this book on the recommendation of a reading content creator that I have a lot of faith in after they compared it to Dark Matter by Blake Crouch. That is one of my favorites, and I love that type of genre (a piece of advanced scientific tech imagined in the present day). I suppose by that definition, Leap fits the bill, but the similarities end there.
While this book is about the invention of the technology that allows for teleportation, the teleportation is used very rarely and with little imagination. At first it intrigued me by focusing on how an invention like this might affect the economy and other travel industries. I was ready for a more pragmatic look at what this leap in technology would do in today's world (or ~20 years ago), but this quickly became tiresome and didn't amount to much. I'm going to divide my thoughts into sections.
The Genre:
As I said, this is a mild sci-fi story about teleportation, but it almost never feels that way. The book spends most of its time focusing on corporate espionage and generic action/spy thriller action that makes the whole book feel more like a generic "thriller" you'd find in an airport gift shop. The action itself isn't very exciting or creative, and neither is the corporate feuding. If I'm reading a book about teleportation, I want that to at least be one of the major factors of the story.
The Science (Fiction):
This is one area that really confused me. Not because I didn't understand the science, but because I think the author missed important implications about the tech they wrote. Let me explain. There are a few different popular theories about how teleportation could be made in the future (VERY hypothetical but they're usually chosen to be used in fiction). This book chooses the method of a device that can scan your quantum data, deconstruct your, and reconstruct you at a different location almost instantly. This idea is very abstract and comes with a lot of philosophical issues. To its credit, the book did kind of address the philosophical and moral issues with this kind of teleportation, but not in an interesting way. My biggest issue with it though was the motive for the development of the technology. This is something I'll get more into later, but the scientist who invented this technology (who was given the generic "mysterious genius" characteristic that they worked on the Manhattan Project) did so for the sole purpose of saving the environment. He wanted to eliminate the need for motorized vehicles so that they will stop polluting the atmosphere. It is an admirable goal, to be sure, but it is such a minor thing that can be accomplished with this technology. This type of teleportation offers the ability to do so much more than just teleport, and the book goes out of its way to address some of these things. The developer of the technology (and the character who is continuing it in the book) only care about reducing carbon emissions, and don't seem to care at all that their technology is actually the greatest revolution the field of medicine has ever seen. It could cure cancer, heal injuries, and even regrow limbs. The possibilities are nearly endless but the books seems to think that these things are trivial, and only want to reduce CO2 emissions (more on this later). If the author really wanted to focus solely on the fact that teleportation can allow for greener travel, they should have chosen a different explanation for the science that allows for teleportation, because as it stands it is hard to watch the characters ignore all of the other possibilities that the technology allows.
The Characters:
Ethan: For the majority of the book he is mostly uninteresting. He's a somewhat reclusive genius businessman despite his young age. Throughout the book he is shown to be mostly meek and not physically intimidating (so much so that in a moment of need they decide to fix that problem). However, in the last act of the book it was revealed that he actually has a really dark past where he spent years in a foreign prison getting tortured which actually made him really scrappy and tough. (Keep in mind, this is after they switched him back to his original physicality). More than anyone he should have seen the possibilities that the technology provided, but he didn't. I never really felt much for him throughout the story, but that's also not entirely his fault because halfway through the book they drastically changed him mentally as well as physically, so it's hard to judge "Ethan" on his own merit.
Uma: I still blame her for only caring about the teleportation aspect of the technology. Even when she decided that teleportation shouldn't be available to the public, she could have still used it for its medical benefits, but she instead chose to scrap the whole program. She wasn't a bad character, but she wasn't compelling either.
Generic Assassin Guy: We spent WAY too much time with him. He is a one-dimensional terminator-esque assassin who spends a chunk of the book trying to kill our main characters. We don't need multiple chapters following him so that the reader can see how he gets around. He (and the spy/thriller aspect) is the least interesting part of the story, yet we spend so much time with him.
Characters who got way too much focus: Almost all of them. The book is peppered with chapters that follow the POV of a character that we only see once as they are adjacent to some of the book's main events.
The POV Issue:
This book seemed to struggle to decide what it wanted to be. It was somewhere between third person limited and omniscient narrator. It was always written as if third person limited, but in the middle of scenes would switch to the limited POV of another character in a way that was really jarring.
The Twist(s):
The twist was so weak and so predictable. The book spends so much time talking about one potential bad thing that the technology could be used for that when the main character has a "twin" sister, you know exactly what is happening. And when the book tries to pull off the same twist a second time... Fool me once...
The Motive:
As I read through the book the main character's interest in saving the environment felt very impassioned to the point that I was convinced that the author was writing this book for the sole purpose of promoting awareness of climate change and advocating for a greener lifestyle. This was further shown by the prioritization on teleportation over other health benefits of the technology, like I said before. Once I got to the end and saw the tie-in website and the name of the series I am more convinced of this than ever. There is nothing wrong with this goal, of course. I support it. However, if you are going to use a story to try to address this issue, it should be done in a better way. The way this book was written, the technology felt like far more of a threat than climate change. I can't even remember a single time the book mentioned an actual example of a consequence of climate change. They just repeatedly threw out claims of how much CO2 vehicles produce.
The Creator That Recommended This:
Like I said, I read this on the recommendation of a content creator that I like because we share tastes, and they are famous for having really high standards and are a very harsh critic. Once I read the book and was underwhelmed, I went back and watched the video where this person recommended it. Then I saw that they had a newer video promoting the whole series. Watching this creator make these recommendations with a new perspective, it feels VERY obvious that they were just paid to promote these books. Coming here to see how few reviews and rating there are years after publication (by a shadowy publisher) only makes me feel more confident about this. Be wary of who recommends this series to you, because it is likely a paid promotion. It's not inherently bad for people to take paid promotions (nor for authors to pay people to promote them) but consumers should be aware so that they can take it with a grain of salt.
In Conclusion:
This book is very mediocre message-pusher that bears more resemblance to a James Patterson "thriller" than a mild sci-fi story with thought and consideration. Again, the message of the book is important and good, climate change is a serious problem, but this was a really weird way to try to handle it. If you are a fan of the genre this book presents itself as, you'll probably have a better time rereading one of your favorites. If you do decide to pick this up, proceed with caution. Not because you're going to have an intense experience, but because you're going to be left thinking "Is that it?"