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A whirlwind adventure about a pair of kids who must break all the rules of time travel.

Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers—people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan’s future self, warning them about an impending disaster that threatens them and everyone they know.

Will they be able to set aside their past in order to save the future?

384 pages, Hardcover

First published June 9, 2020

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About the author

Laura Martin

10 books271 followers
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5 stars
609 (42%)
4 stars
624 (43%)
3 stars
176 (12%)
2 stars
35 (2%)
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2 (<1%)
Displaying 1 - 30 of 257 reviews
3 reviews
November 18, 2020
OH MY GOODNESS! THIS BOOK! We listened to this book on a very long,very cramped car ride with 4 too many kids in the car and none of us wanted to get out. We literally were begging our parents to keep driving after we arrived to our destination so we could keep listening. If that doesn't attest to the awesomeness of this book, I don't know what will.
Profile Image for Becky B.
7,516 reviews94 followers
August 5, 2020
Regan Fitz and Eliot Mason are training to be Glitchers (time travel operatives who prevent people from changing the past). They can barely stand each other. Regan thinks Eliot is a know-it all with zero social skills. Eliot thinks Regan is the entitled daughter of the commander, and that she acts like a princess. When a note from the future, a very illegal note from the future with their names on it, arrives Regan and Eliot must find a way to work together to save their present and future selves from some unknown danger.

Laura Martin is a genius at writing exciting scifi adventures that are pitch perfect for middle grade. I can't see even reluctant middle grade readers easily putting this down after just the first chapter. It is perfectly paced with plenty of action while also giving moments for character building. Time travel can be tricky to write convincingly, and Laura Martin also does that. The training exercises to various key points in history are fun to experience with the Glitchers; it really makes history come to life in new ways. The futuristic world in which Regan and Eliot live is intriguing, and I really, really hope that there are more books with this duo. Highly recommended to any middle grade time travel fans, or anyone looking for an engaging and exciting middle grade read.

Notes on content: No language issues. No sexual content. There are deaths and grave situations in the historical time periods, and some dicey situations in the present too. Martin is able to convey the seriousness and gravity of such events without including much blood or gore at all.
Profile Image for Hoover Public Library Kids and Teens.
2,603 reviews56 followers
April 1, 2021
I usually can't make it through a time travel book, but this story of rival Glitch Academy Cadets Regan Fitz and Elliot Mason, who are training to use their rare genetic ability to travel through time and prevent “Butterflies” (so named for the butterfly effect) from altering U.S. history, totally sucked me in and blew me away.
Profile Image for Ms. B.
2,908 reviews35 followers
March 15, 2023
A little like Keeper of the Lost Cities, Daughter of the Deep, or the author's own Float; this story features a specialized school for students with unusual powers or talents. In Glitch, it's time travel.
Regan and Elliot are classmates training to be glitchers (time travelers who prevent other time travelers from messing up the world's history). The two have a complicated relationship; Elliot thinks Regan is a spoiled brat and Regan thinks Elliot is a know it all as one of the brightest (if not the smartest) students at the Academy. When the two are selected as a compatible pair for a new top secret program, they will need to set their differences aside and time travel together as a team.
If you like anything science fiction, loved the adventure of City Spies or are looking for time travel stories for tweens and young teens, give this a try.
Profile Image for Cindy Mitchell *Kiss the Book*.
6,001 reviews186 followers
June 21, 2020
Glitch by Laura Martin, 384 pages. Harper, 2020. $17.00.

Language: G (0 swears); Mature Content: G; Violence: G



Have you ever wanted to travel back in time? Well, get tested to see if you have the glitch in your DNA. If you do, you will automatically be taken to the Glitch Academy where you will learn history, self-defense, and glitching, the ability to time travel. You will be secluded from the rest of the world, taken away from your family, and spend your time studying history. But you will also learn how to detect butterflies (the bad guys) who want to change history. If they succeed, the world as we know it wouldn’t exist. Regan and Elliot who are two cadets at the Academy and are not the best of friends, are put in a situation where they need to put their differences aside as they are asked to save the Academy and the world as we know it.

I really liked this book and I think tweens and early teens would enjoy reading it. It is a fast read. The author did an incredible job expressing in detail, but not too much detail, what the academy is like for all of the cadets who attend. I really like the way she described the feelings the two main characters had towards each other. I do have a hard time understanding exactly how things all worked out because of the time travel aspect of the book but as long as I don’t think that much into it, it works.

Profile Image for Subhashini Siva.
124 reviews105 followers
February 10, 2022
A quick and engaging Middle grade Time- Travel story.
I loved how the author handled the Time-travel really well.

Highly recommend this book!
Profile Image for Cindy (leavemetomybooks).
955 reviews59 followers
March 9, 2023
Loved this, especially the snarky relationship between the two kids (though, I’ve been reading waaaay too many enemies to lovers romcoms and kept having to remind myself that this is a book FOR CHILDREN and that there will be none of that 🤣).

Time travel books are really tricky to pull off, but this one worked. Did it all make perfect sense? .. not exactly, but it made enough sense to be reasonable and super engaging. I am a little freaked out by the amount of war/violent death these kids are forced to see up close while glitching - yikes.

I would love for this to be turned into a series!

* Reading Olympics Spring 2023
Profile Image for Liz Friend.
970 reviews83 followers
February 10, 2022
The story: Turns out time travel isn't all it was cracked up to be. Nowadays, criminals called Butterflies make jumps through time to change the course of events for their future profit. In response, every country has its own Glitch Academy, which trains students to stop the Butterflies and preserve the course of history. Cadets Regan and Eliot are arch-enemies who somehow find themselves partnered up as a team just at the crucial time that Butterflies attack the Academy itself. Can they put their past behind them long enough to make sure the future doesn't come crashing down around them?

June Cleaver's ratings: Language G; Violence PG; Sexual content G; Nudity G; Substance abuse G; Magic & the occult G; GLBT content G; adult themes (scences of sci-fi violence, nothing graphic) PG; overall rating PG. Good for grades 5-8.

Liz's comments: Here's a cool sci-fi story about the dangers of messing with the time line. Temporal anomalies aren't just for Star Trek! It's a relief when Eliot finally gets control of his anger, which is grating; otherwise everything's just fine with this story. Told in alternating points of view, it's good for both boys and girls.
Profile Image for Shana Shroll.
71 reviews
February 23, 2022
I struggled to get through this one, though an unfortunate plunge in the bathtub and the subsequent week waiting for it to dry out surely played a role in how long I took to get though it (thank goodness it wasn’t a library book!)

Time travel stories are always hard to follow and the resulting paradoxes don’t ever fully resolve properly, and this one certainly had those issues. And flipping perspective back and forth between the two main characters adds to the whiplash.

But the premise is interesting and fun and hopefully encourages kids to explore the past: students are trained to “glitch” or time-travel to preserve important historical events- even the tragedies, like Lincoln’s assassination. It’s an important lesson for kids of all ages to learn about and respect history, so we can properly understand our own place in it- even the parts we’d rather change or simply ignore.
Profile Image for Amita.
266 reviews2 followers
August 17, 2021
Ah, time travel books. There's always the one moment I have to go back and reread something because I've gotten absolutely lost in the tangle of time. Yet I will never stop reading them.

INDIVIDUAL CHARACTERIZATION: 4/5. Regan and Elliot are good characters with good character arcs. It doesn't hurt that almost all of their background, strengths, and personalities are very similar to another rivalry that I really enjoyed (which will be reviewed later because duh), just switched around a little.
INITIAL DYNAMIC: 4/5. Very irritated with each other, very good. There was never the head-to-head element (except for One scene) that usually characterizes rivalries in a school setting, but the resentment was there.
RIVALRY DEVELOPMENT: 5/5. They nailed this one. The progression felt natural, not too rushed, and at the end it was clear the events that caused their relationship to change.
GENERAL CHAOS LEVEL: 4/5. I won't lie, while these two had the bickering and the petty revenge (see bonus points section) down pat, there was that extra little bit missing, the bit that causes an event to go completely absolutely off the rails.

Average: 4.25/5

CROSSING A LINE (+0.5) - For those rivals that go above and beyond, that prove they have absolutely, completely ZERO chill. is so out of pocket. Have some bonus points for it.
TRAGIC: YOU MAKE A GREAT TEAM (+1) - There's only one thing that makes rivals hate each other more, and that's being told "you two work so well together!" Absolutely devastating for them, highly entertaining for me. You go, guys, and your perfectly matched strengths and weaknesses. I'll get the popcorn!
SITUATIONAL DRAMA (+1) - I would be dumb, and also a liar, if I didn't give bonus points to a plot that tells 2 mfs who hate each other, straight to their faces, that they're gonna be forced to stick together like glue. Not kidding; these two had to train, study, eat (pretty much everything but use the bathroom and sleep) side-by-side. Priceless.

With a satisfactory beginning, middle, and end, Regan and Elliot's rivalry might be missing a few style points, but it's a solid, no-nonsense showing that absolutely deserves its mention in the book description.


Although the beginning is a bit info-dumpy and there's kind of a lot of setup, my overall perception is of a fun, fast-paced time travel story. Also after that ending, where is the s e q u e l
Profile Image for Sara Hollar.
292 reviews18 followers
April 1, 2023
The boys and I listened to this on audio and it was fantastic! I'm not usually into time travel, but this kept it fairly simple so I didn't feel lost in the confusion. You learn about historical events, the characters grow and change over the course of the book, it was fast paced and fun. Everything we could want for a family read aloud! Highly recommend!
Profile Image for Michele Knott.
3,603 reviews156 followers
May 14, 2022
Again, thankful for state awards for bringing me to new titles like this one. Time travel, adventure, new friendships, suspense - so much to enjoy with this one!
It's helpful to have some knowledge of historical events, but not a prerequisite.
Profile Image for Beth.
81 reviews
March 8, 2023
Most of the time, I find middle-level books very bland, but read them to be able to recommend to my students. This one was different! I actually enjoyed it immensely. Great option for Spy School lovers.
Profile Image for Troy Lefman.
326 reviews
April 17, 2022
The audio version was slightly better. A lot of the language was clunky. We'd get bits from a child's perspective, then the same character would sound much older. Some of the other parts were awkward - have you ever tried swallowing a golf ball? I had times it was tough to tell who was narrating, even with the name at the start of the chapter.
July 28, 2022
sci-fi isn't my usual to-go genre, but there was still the history buff in me that adored this. regan and elliot's characters are both well-developed, with a clear backstory and personalities that don't drag on throughout the story. though they're not flawless or without their faults, they are relatable and we get a clear understanding of where they stand early on in the book, which clears up confusion afterward.

anyway, the plot - it's this dystopian world where kids are born with the glitcher gene in their DNA. a glitcher is someone who is able to travel seamlessly through time. only one in a half million have it in their DNA, so thereafter they are admitted to one of the glitch academies around the world, which specialize in preserving the narratives of their own countries. this is where we are introduced to one of our protagonists; regan fitz; her mom is the commander in chief of her glitch academy, so naturally she's expected to follow in her footsteps. however, she drastically fails her practice simulation of abraham lincoln's assassination, which prepares her for real missions where she has to root out the butterflies, aka the glitchers' main adversaries who seek to change history instead of preserving it. here, we also meet our other protagonist, elliot mason, regan's worst archenemy. the two squabble and end up finding a letter that goes against everything their faction stands for - which of course results in an unlikely duo teaming up to save the day. fast-paced and witty, martin's middle grade novel is sure to be a delight for all lovers of sci-fi and time travel.
Profile Image for FloeticFlo.
916 reviews40 followers
September 27, 2020
I flew through this one in a few days, which was awesome! I'd been in a reading slump, and this brought me out of it.

When I was about the age of the characters in this book, I wrote a story about time travel. I was obsessed with it back then (Back to the Future II was my movie!) and I loved thinking about it, reading about it, and writing about it. So this book made 12-year-old Flo smile so wide.

It had great pacing and action, and the progression of the friendship between Elliott and Reagan was believable and well done. I'd read Laura Martin's other book, Float, and enjoyed it, so I think I'm officially a L.M. fan! Can't wait to see what she shares with us next!
Profile Image for Allison.
576 reviews
October 22, 2021
Oh my goodness, where has this book been that I've missed it until now? This was such a fun read! We were constantly engaged and wanted to keep reading never stop the entire book. Time travel adventures like this thrill me and this one was done well and was perfectly written for the middle grade crowd without being juvenile and dumb. Loved it. Fun read aloud with my thirteen year old and I just know my ten year old will LOVE it, too. I would highly recommend this book- it's definitely on "the" list for me.
Profile Image for Cassiejoan.
368 reviews
May 26, 2023
I would rate this 3 stars, my kids would rate it 5. But since I'm in charge of the GR account, my rating is the one that gets posted ;) However, I should add that time travel is *rarely* appealing to me, so I knew that would be a hard sell for me. Also, I should probably rate this 4 stars simply b/c it appealed to all 3 of my kids, which is an increasingly difficult requirement and few books seem to fit the bill these days. Aside from all that, this is a story of friendship, adventure, and time travel into real historical events, all elements that were appreciated.
Profile Image for Theresa Grissom.
803 reviews22 followers
February 4, 2020
Thanks to Edelweiss for an ARC of this book.

I loved this! This is the 5th book I have read by Laura Martin and Glitch is one of my favorites. Usually time travel books hurt my brain so I struggle through them but this was much more fun that what I have read in the past. The characters were fun and likable and the storyline was fast paced and exciting. I think upper elementary kids will love this one.
Profile Image for Wendy Bunnell.
1,268 reviews30 followers
August 23, 2020
Fun time travel romp for teens.
I liked the setting, with the academy, and competitive nature of students.
The character arc was a little clunky, with a huge leap forward at one point. I wish that would have been a little more gradual, and more at the character's initiative rather than having to be told.
Profile Image for Alice-Anne.
336 reviews2 followers
October 24, 2020
Hands down one of the best audiobooks we have listened to on a road trip!
Engaged all of us and helped many hours in the car pass quickly. A book about kids who serve as time travelers to help prevent other criminal time travelers from changing important historical events in the past. Told through the experiences of Elliot Mason and Reagan Fritz. There were a few holes with the ending but I guess that can be typical with time travel!
Highly recommend this middle grade novel!!
Profile Image for Katie Lawrence.
1,445 reviews22 followers
October 25, 2020
This was just excellent. What a gripping, fascinating read! I just finished it and am still processing, but I will definitely be sharing this on 5th grade booktalk virtual visits this year. Really well done. I hope there's a sequel, I love the world Martin has built with the Glitchers and Butterflies.
Profile Image for Katelyn.
121 reviews107 followers
November 5, 2022
This reminded me of a kid’s version of Ender’s Game, only these children are saving the world with time travel. The first half about Academy life felt rather slow, but the second half was much more exciting. Though I do genuinely enjoy some middle grade books, this one will definitely be liked more by younger readers.
Profile Image for Karen.
192 reviews2 followers
September 17, 2020
Screening books to be gifts to my nephews. This one is fun because it's got some science fiction to it with the time travel and genetic mutations, but then has historical fiction aspects with the time travel to the past
Profile Image for Ondalynn.
22 reviews
December 31, 2020
I think I would’ve enjoyed it more if I would have listened to it. I read it aloud to my boys and I felt it was kind of slow until the last 60 pages. The ending was a face paced climax with mind boggling twists and turns. A good read for middle schoolers.
Profile Image for Karisa Bailey.
37 reviews1 follower
February 12, 2021
We all found it hard to get into. It didn't capture us in the first chapter like some books do. BUT every kid, from 9 years old, upto 18, laughed throughout the book. It had some deep talking points as we went along
Highly recommend!
371 reviews
January 22, 2021
A fun middle grade pandemic distraction book. Makes you consider how even the traumatic world events were instrumental to some much needed reform.
Displaying 1 - 30 of 257 reviews

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