Rigg is well trained at keeping secrets. Only his father knows the truth about Rigg's strange talent for seeing the paths of people's pasts. But when his father dies, Rigg is stunned to learn just how many secrets Father had kept from him--secrets about Rigg's own past, his identity, and his destiny. And when Rigg discovers that he has the power not only to see the past, but also to change it, his future suddenly becomes anything but certain.

Rigg’s birthright sets him on a path that leaves him caught between two factions, one that wants him crowned and one that wants him dead. He will be forced to question everything he thinks he knows, choose who to trust, and push the limits of his talent…or forfeit control of his destiny.

This book is a great start for the series. The story is set on a kind of medieval setting, which is quite odd for this author, and we are expectators to the trip that the two main protagonists, Rigg and Umbo, make in order to uncover the secrets that Rigg's father had. At the same time,every one or two chapters there's also an alternate narration where we are told the story of Ram Odin, a spaceship pilot who is headed to a planet called Garden , which is supposed to be one where life itself is possible.  It is clear since the beggining that both stories have to be related somehow but that fact does not make the final revelation less surprising.

The boys, as well as other characters from the story have some kind of superpowers. Rigg is a pathfinder, which means that he can see the paths that inanimate objects or life forms leave through time and space. Also, with Unbo's help, he can travel back to the moment where those paths are happening. The interesting part about these abilities is that they are quite unusual : it's not uncommon to use time travel in novels of this genre but this approach feels fresh and it helps to form the idea that even though they have superpowers they are not invincible.

The final revelation of the book, obviously, this is a huge SPOILER, is that Riggs planet turns out to be the Garden Ram Odin was talking about, and know the weird stuff that takes the entire trilogy to explain comes in. It seems that Ram Odin's spaceship and its contents passed through a black hole (Somebody said Interstellar? XD) and split itseld in thirteen copies, so in the end we have thirteen ships and thirteen Ram Odin, plus all the other people and things on the ship. They decide do make an impact with all the ships in Garden surface, exterminating all of the native life and substituing it with humans. Therefore, they establish thirteen colonies or wallfold, each one led by a copy of Ram Odin . 

If the previous paragraph was not weird enough, then there's the whole businness of Ram Odin having human like robots, one of them turning to be Riggs not-so-dead father. Also, they seem to be bad beings as they manipulate humans and , on orders on Ram Odin, prevent people from different wallfolds to interact with each other via something called "The wall", a special structure that separates wallfolds and imposilitates them to cross as it emits brain waves that makes them go nuts as they go nearer the wall. Also, the structure is ready to give the people whi cross it the ability to speak every language of the planet , to help with communication when one wallfold becomes technologically advanced(Turns out that Rigg and company cheated since they travelled to the past to cross the walls XD).

Let's go with Ruins.

When Rigg and his friends crossed the Wall between the only world they knew and a world they could not imagine, he hoped he was leading them to safety. But the dangers in this new wallfold are more difficult to see. Rigg, Umbo, and Param know that they cannot trust the expendable, Vadesh — a machine shaped like a human, created to deceive — but they are no longer certain that they can even trust one another. But they will have little choice. Because although Rigg can decipher the paths of the past, he can’t yet see the horror that lies ahead: A destructive force with deadly intentions is hurtling toward Garden. If Rigg, Umbo, and Param can’t work together to alter the past, there will be no future.

The main problem with this book is that in more than 500 pages, there's not even a hundred of story.How is that even possible you ask? Well, most of the book happens revolves around a concept: retorica . And don't get me wrong, I like good thinking but in this case it kinda got in the way of the story and ended up being a text about what the author thinks of several things instead of focusing on the story. They learn about "The Destroyers", the people that destroy Garden, pretty early in the book and even after hundreds of pages of the book filled with reasoning they can not find a way to stop it from happening in a ham fisted attempt of delaying the advancement of the plot long enough to be able to write a third book.

Also there's some super intelligent mice that can sen objects through times and even modify genetically several dna sequences, send them through time and insert them into Umbo, who seems to be like some kind of awesome dude. I'm sorry, but as villains(Their plan was to overpopulate the world) mice just don't appeal to me.

Finally, let's talk about Visitors.

From the internationally bestselling author of Ender’s Gamecomes the riveting finale to the story of Rigg, a teenager who possesses a secret talent that allows him to see the paths of people’s pasts.

In Pathfinder, Rigg joined forces with another teen with special talents on a quest to find Rigg’s sister and discover the true depth and significance of their powers. Then Rigg’s story continued in Ruinsas he was tasked to decipher the paths of the past before the arrival of a destructive force with deadly intentions. Now, in Visitors, Rigg’s journey comes to an epic and explosive conclusion as everything that has been building up finally comes to pass, and Rigg is forced to put his powers to the test in order to save his world and end the war once and for all.

After reading Ruins I did not have high expectations for this one, and although it's better than Ruins in some aspects, it definitely isn't as good as it should be. 

One of the positive points is that answers are given to most questions that arose during the previous installments and were oddly delayed. Better late than never I guess. Also, there's a good ending and the characters live happily ever after. However , apart from that...it's a mess. Most of the book is a filler that divides itself between dialogs without emotion or sense and physics explanations of things that I did not really need to know(I mean, I would have opted for a more 'It magically works approach' XD). Also, there's the things that the characters , specially facemask Rigg and its counterpart, who in this book , to defeat the menace,which turns to be a group of insect like aliens that can drop atomic bombs,simply go their planet a long time in the past and preventing from reaching a certain technological level. No battle , no conflict, no nothing! And don't get me started in the whole time they pass on Earth...what a filler! The only part, story wise, that could be labeled as interesting is the rebel fight agains the Queen, and there's not much space dedicated to thah.