Time Limits: A Marc McKnight Time Travel Adventure

Marc McKnight Time Travel Adventures #1

by Kim Megahee

One day in 1985, Churchie Tyler and Merrie McAllister meet and, later that day, a corporate executive is murdered in his office. These unrelated events set the stage for the events that follow in "Time Enough." Fifty years later, influential US Senator James Lodge pressures the Historical Event Research Organization to investigate his father's murder, using newly-developed Time Travel technology. Army Ranger Captain Marc McKnight is assigned to travel back in time, witness the event and bring back the story of what really happened. Everything proceeds according to plan until McKnight accidentally interacts with Merrie in 1985, preventing her from meeting her future husband. This alters history and affects the descendants of the Tyler family, including McKnight's teammate Winston Tyler III. Now, McKnight must repair the damage he caused and complete the original mission. Despite his efforts, he runs into Merrie again, creating more wrinkles in history. Worse, she is beautiful, smart, and full of life - and the one woman he cannot have. McKnight confronts the classic dilemma - be with the girl of his dreams or preserve history as it should have unfolded. Will he do his duty for his country and fulfill his mission, or follow his heart and give it up for the woman he had been looking for all his life?

Genres: Time Travel

254 pages, Kindle Edition

First published December 22, 2013

About the author

Kim Megahee is a writer, musician, and retired computer consultant. He has a degree from the University of Georgia in Mathematics Education.

His background includes playing in rock bands, teaching high school, and much experience in computer programming, security and consulting.

He co-founded an computer consulting firm in 2012 and traveled on business to Europe, Central America, South America and New Zealand.

He started his writing career later in life, after a former student encouraged him to write down some of the stories he was fond of telling.

In addition to writing, he enjoys reading, boating on Lake Lanier, playing live music, and socializing with friends.

Kim lives in Gainesville, Georgia with his soulmate wife Martha and Leo, the brilliant but stubborn red-headed toy poodle.

Reviews

[Therearenobadbooks · Rating 5 out of 5]

A great start for this series, time traveling, but also a murder mystery. The thing is, they want to discover who the murderer is, but to do that, they travel to the past when it occurred. In this volume, we have a lot of tampering with the time-traveling laws and mistakes made that lead the characters to work harder to undo their changes. Fun plot twists at the end, I wasn't expecting, and a good intro to upcoming volumes.

[Mischa · Rating 3 out of 5]

Interesting story, edit is bad

Let me start with the bad. The editor of this book, if there was one, did a subpar job. There are a lot of incomplete sentences, missing words, and other mistakes. Often I had to go back and reread a sentence or paragraph and try to guess at what the author was trying to say. The editing knocks several stars off for me.

The good thing is the story itself is interesting. An editor would have helped here to tighten up a few things, but the premise is good and I found it an enjoyable read.

The time travel aspect seems realistic without getting into a bunch of scientific stuff I can’t understand anyway. It’s nothing outlandish, but contains limitations and boundaries which can cause complications and difficulties, which seem completely believable. And complications do arise! They have an affect on the future and how that manifests and how the team solves it is enjoyable.

The characters aren’t as deep as I would have liked, but this is the first of a series so I hope we get to know them better over the next books. There’s no cliffhanger in this book, and if you didn’t read the next, you wouldn’t miss anything.

Overall it was a quick, entertaining read if you can look past the really poor editing.

[Blythe · Rating 5 out of 5]

I won a copy of Time Enough through Goodreads Giveaways!

The HERO (Historical Event Research Organization) project is formed in 2035 as a way to research past events using a new technology: Time Travel. Shortly after their formation, they are approached by Senator Lodge for assistance in finding out who killed his father 50 years past. Through Captain McKnight's mission, we find that there are limitations to time travel and that small changes in the past can cause large changes to the future.

This book was so hard to put down! The story was unique and could appeal to many; there was science fiction with some murder mystery and a touch of romance. The time travel was well done and completely believable. I really enjoyed the world and the characters that K.M. Megahee created and I am definitely looking forward to the next part!

[Laurie Hyatt · Rating 5 out of 5]

I was pleasantly surprised that I did not want to put this book down because I'm not generally a sci-fi fan, but I met the author at an event and thought I'd try his book. Time Limits is a clever combination of the sci-fi element of time travel and a murder mystery thriller. Using time travel to go back in time to actually see the crime as it occurred is a detective's dream. Not simple, though. Many complicated relationships and unforeseen technical difficulties keep the reader in suspense. Will they be able to really pull this off? Now that I know that this author knows how to stage intrigue and surprise, I will look for more of his books.

[Krishnan Nair · Rating 4 out of 5]

I have read great, poor, and average time travel books on Kindle Unlimited. This was definitely near the top tier. It had pretty much what I was looking for in a time travel novel. Smart characters, mostly specific rules but some that the characters don't understand, a mission with things going wrong. The only issue I had was that the suspense wasn't the greatest but that is understandable considering the time travel is the focus.

I also liked that it left a few open plot points to be explored in the next installment. Overall, I am looking forward to reading the next book in the series.

[Tammy Hastings · Rating 4 out of 5]

Received through First Reads Giveaways.

Man oh man. How I hate being the first person to write a review simply because I'm a reader, not a writer, and as such, I am awful at writing reviews.

I did like the book, however. The characters were entertaining and the plot was unique and quite captivating. I have honestly read nothing like this in quite a long time. I highly recommend it.

I'm sorry that my review is not better. I'm just not good at writing these things.

[Eldon Hughes · Rating 5 out of 5]

A great read. Well thought out time travel novel. Lots of surprises. Thoroughly enjoyed it.

[Pamela · Rating 1 out of 5]

Oh Lord! It is very unusual to find a book this bad on so many levels. First of all, it is sloppy. Very sloppy. There are words out of order. Trousers change to a shirt from one sentence to the next. A conference table changes to a desk and then back again. Some sentences are missing words and some just flat out don’t make any sense.

Imagine a group of cardboard characters that haven’t a brain among them attempt to use a Time Machine, but keep screwing it up. Sounds like a good premise for a comedy book, but NOT for something that bills itself as serious. Add to that a mystery that—except for the bit the author pulled out of his rear end—is obvious about 25% into the book, an adolescents’s idea of romance, and, pacing that defies belief. The pacing goes like this: The nincompoops finally have obtained proof of who the killer is, but before they examine that proof, they spend page after page speculating on the answers to several incredibly unimportant—when compared to the solution of the murder—questions there are.

And! To add make all of this even worse, the writer has the stupid, annoying, ridiculous habit of not playing fair with the reader by no revealing info that the main character finds out until chapters later, even though the character now has the answer to important questions Not a bad literary device, but should only be used very carefully or it becomes annoying…and this reader is annoyed.

This is the first in a series, but no way am I wasting another day of reading to see if the author improves. No way!

[whatnolareads · Rating 4 out of 5]

Y’all… Time Limits by Kim Megahee has me SHOOK 😭🔥 and has taken me on the wildest ride of my life. The story starts strong with Captain McKnight, his best friend Tyler Stewart (who’s blunt, loyal, and honestly iconic), and General Michael Drake (“the Dragon”), all caught up in a top-secret HERO mission. And let me tell you HERO is no ordinary assignment. It’s the Historical Event Research Organization, which means… yep, TIME TRAVEL.

From the start, I was hooked. The time travel rules are genius: 25-year increments, strict protocols, and crazy consequences if you mess with history. Then comes the twists. Robert Astolios and his “grandsons”? Mind blown 😭. And don’t even get me started on recombination sending the same person back in time and merging consciousnesses?! Two minds in one body having full-on conversations?! Absolute chaos and brilliance.

But the emotional stakes? Next level. McKnight’s banter and awkward moments with Tyler’s grandmother (yes, the grandmother!) had me giggling, but the tension ramps up fast. Memories shift, timelines rewrite themselves, and what happened to Lodge’s father? I did NOT see that coming. 😳 Every twist leaves you gasping and questioning what’s real.

This book balances heart, humor, and mind-bending sci-fi perfectly. It’s clever, thrilling, and honestly unputdownable. If you love time travel, jaw-dropping plot twists, and characters that feel real, Time Limits is a must-read. I’m obsessed, I’m shook, and I NEED to know what happens next

[Nicole Dunton · Rating 5 out of 5]

📖 Title: Time Limits
✍️ Author: Kim Megahee
⭐️ Rating: (5 out of 5)
📅 Date Finished: October 19th, 2025
—————————————————————————
🧵 Quick Summary:
Captain Marc McKnight is leading an elite team on a one-week time-travel mission to 1985 to observe a cold-case murder without altering history. But a chance encounter with an enigmatic woman throws everything off course, creating an alternate timeline and forcing McKnight to risk everything to repair the past and protect the future.
💭 What I Loved:
- Time Travel meets Mystery!
- Very expressive characters (Yes multiple)
- Great writing style!
📌 Favorite Character:
I have to choose just one??? Not fair!
🧠 Notable Quote:
“To her emotional mind, he felt right. But her logical mind rang alarm bells.”
🗣️ Final Thoughts:
When I first started reading this book, I had no idea that I would get hooked. It took me a bit to get into. I’m not going to lie. I can say that once I got interested, the hook stuck. I’m eventually going to have to get my hands on a physical copy. I also plan to read this again in the future! It’s so good. For anybody who has started this and it didn’t hit right away, keep reading. Trust me.

[Mark Luebker · Rating 3 out of 5]

I love time travel stories, and this one was just okay.

It starts in the relatively near future (2035) and then goes back fifty years. Because the majority of the action takes place in an Atlanta office tower, it’s a little claustrophobic and you don’t get much sense of how the world may have changed over fifty years, other than the “time engine” that moves the hero back and forth and provides quick and convenient solutions to a couple of seemingly difficult problems that arise.

Some of what’s going to happen is telegraphed pretty clearly at the beginning, some of what’s happening at the end isn’t telegraphed at all (and had me confused enough to search what I’d already read for the previous appearances of a particular item), one character who briefly appears near the beginning and again late in the book plays no real role in the story, and a couple of other characters just sort appear at the end to help wrap things up, deus ex machina-style.

An okay read, but didn’t grab me enough to make me want to read the rest of the series.

[Judy Welden · Rating 5 out of 5]

I had no idea I'd enjoy a time travel book, but was wowed by Kim Megahee's "Time Limits"! First he has such memorable characters: I especially liked Marc and Merry...then later on really liked Kathy and Trevor, although all the characters were easy to remember as I read the story, never once losing track of who was who. Kim writes in such a way that even if there are quite a few characters involved, it is very easy to keep track of not only them, but exactly where (and when) they are in any given moment of the story. It has a surprise ending as pertains to the reason for the time travel and a very appealing love story is woven throughout the main plot. I highly recommend this book, even for those who are not time travel fans. My daughter is one though and she purchased a copy to read after I told her I really enjoyed it. Planning to read Kim's second book "Time Twisters" soon.

[Mike · Rating 5 out of 5]

If you like time travel books, this is one you'll want to read. but if so be prepared to buy more of the series!

I chose this rating because it was indeed a five-star book,I love time travel books and they are probably my favorite genre in books or movies. After reading dozens and dozens of them, I came across this one and thought I'd give it a try, and this went straight to a top rating! It was great story and the great ideas that went into
depth about time travel ideas! It was quick reading for getting into a very potentially confusing area but with the way it's told and the development of it's characters makes it flow so smoothly. Now through a "who dunit" to the mix and you have a winner! I'd like to but can't go further without a spoiler alert so I'll say it was well worth the read In moving on to my net in the series right now

[Russ · Rating 4 out of 5]

I really liked this book. It was a fun, time-travel murder-mystery. It's always interesting to see how each author determines the "rules" for time travel in their stories, and this one had an interesting resolution to two of you being in the same place at the same time.

As with many books and movies, the military aspects of saluting and standing at attention are way overdone, especially for a small close-knot team like this. It seems the author probably had some military advice, but people jumping up to stand at rigid attention and saluting and all of that in the middle of a meeting or social occasions isn't realistic. That kind of thing, as a former military member, does take me out of the story briefly.

But overall an enjoyable book. It did start off a little rough - the writing seems a bit stilted at first, but I'm glad I hung in past the first few chapters. Good read!

[Steve · Rating 4 out of 5]

Ah, ha … Time Travel and associated paradoxes!

Of course! Fortunately, this Author tries to deal with them directly, which I respect. I may not agree with The Author’s results and/or storyline, but I accept this is his story to write (even if it’s written wrong!)

There is a particularly WEAK point in this tale — Time Travel can only/conveniently occur at 25-year intervals in the past … what kind of stupid, artificial barrier did this Author come up with?!? Geeeeez!!! [I object to such a time interval, because calendars are artificially man-made, and there’s nothing special about a base-10 number of years — considering Leap Years don’t even evenly divide into this 25-year value, Earth won’t even be in its same orbital position, so it’s not like the stars would be aligning in a magical orientation. The 25-year cycle is hogwash!

[John Fockler · Rating 5 out of 5]

New and Different

First, a small bit of bad news: the method of time travel in this novel is extremely short of explanation. The rules, parameters, and limitations are clearly spelled out, but there's no explanation of why.

And at the end of the day, it just doesn't matter very much. This is not the 48,736th retelling of the same time travel story you've read before. The plot is fresh, and I didn't see each twist and turn coming from miles away. The central characters are unique enough to hold interest. The writing is clean and crisp, and the pacing is rapid. All in all, a most satisfying read.

[Country Mama · Rating 4 out of 5]

Time Limits is the first book in the series that we meet Marc McKinight our MC and namesake of the book series, Captain Marc McKnight. I loved how the story took place in GA, where I live, I recognized some of the places the author wrote about. The story is a sci-fi thriller which I like occasionally:) I also love the future setting of the story. The story takes place in the Atlanta office tower which is a big corporate building in downtown Atlanta. Also there is time travel which is a great sci-fi read for me. It was a quick read for me and I think that the characters were well written with a mystery also included in the book series.

[William S. · Rating 5 out of 5]

Fun ride

There were some errors, e.g., roommates at the point would both be captains or both be lieutenants at the same time without some drastic circumstances that would have affected their careers. There were far too many "you can call me Al if I can call you Betty." Pace and dialogue were really slow at the beginning. I was ready to quit, but then we got into the adventure, and I couldn't put the book down. Then at the end, the windup was back to ridiculous dialogue, and slow pace. I decided that despite these shortcomings, I found the book to be quite entertaining.

[jboyg · Rating 3 out of 5]

Decent Story, Somewhat Clunky Writing Style.

First book on a time travel series, fair amount of back story and introduction of characters. I found the plot interesting but kept coming across stylistic choices that seemed clumsy and detracted from my enjoyment of the story. Could have benefited from tough minded editor. Still, it's hard to keep a good time trAvel yarn down and this good, but not great.

[Bruce Carter · Rating 5 out of 5]

Excellent start to a series

I very much enjoyed this book. Just enough science and technology to really keep me happy without alienating or boring normal people, an interesting take on the whole time travel trope, a new idea (at least to me) about crossing timelines, and just enough twisting around to keep things fresh. The only thing missing was a really big reveal at the end, but the smaller ones worked out just fine. Looking forward to more!

[Brian Quick · Rating 4 out of 5]

More of a murder mistry that sf, but without time travel, there would be no story. So sf I guess it is.
Good exploration of the mistry of what happens if you step on a butterfly 6 million years ago. That hss nothing to do with this book, but the implications do.
Rather than killing your grandparents, what happens if they don't meet in the 1st place. Interesting question.
Interesting solution.

[Rick · Rating 1 out of 5]

Yikes and double YIKES! So many errors in so many places. Here’s one of the holes. One of the characters said she liked Blue Moon beer back in 1985. Blue Moon was taken to market in 1995. Also, who in the hell was Harry?

The characters were one dimensional at best. Think I’ll pass on the sequels. Not my cup of tea!

[John Campbell · Rating 5 out of 5]

First of 4

I have just read the first in series of 4. Read the other 3 and now I have background on the series. Nice bit of conjecture to piece together with the other novels. Great concept on the time questions.
Start with this on and you will be rewarded with a new knowledge of what can happen if the smallest of changes occur.
Nice refreshing approach.

[Penny Odom · Rating 5 out of 5]

Thoroughly enjoyed reading this book. The twists and turns made it hard to put the book down. The concept of time travel is executed flawlessly, weaving together past, present, and future in a seamless narrative that keeps you guessing at every turn. Loved each surprise as it added depth to the story. Anxious to read the next series!

[Cindy · Rating 5 out of 5]

Wonderful story

I really enjoyed this story. I had all the emotions the author intended the reader to have-tense, scared, romantic, surprised, and happy. This time travel was one of the most believable ones I've read.

[Charlene · Rating 5 out of 5]

I really liked this book. The premise was great, and the characters were full and believable. I liked the idea of only going back in time in multiples of 25 years. It made a great limit to the plot that really increased the creativity of the story. I would love to read more about these characters

[SUSAN · Rating 5 out of 5]

Great Book

Really got caught up in the characters! Great storyline, held my interest from the start. Usually I figure out “who done it” way before the end but not this time. Going to read the rest of the series right now!!

[Francine · Rating 5 out of 5]

"Time Limits" proved to be unlimited enjoyment for this reader

The character of Marc McKnight is of a typical hero, yet the twists and turns of this story kept me engaged and delivered a fun reading experience. I love SciFi and this time travel book proved to be full of surprises.

[William N. · Rating 5 out of 5]

It surprised me!

I didn't care for the initial explanation about why the time travel worked, but once past that I really grew to like this story. Glad that George proved to be as smart as he was, as well as Megan, in her way. Good book. Will shortly read the next volume.

[Paul Madsen · Rating 5 out of 5]

Excellent time travel tale

This tale kept me going. Clean PG-13 rating which was a nice find. This saga has several unexpected trust with murder and sleazy characters all make a 50 year mystery come to life. Well done.