I enjoyed the overall premise of this story combining archeology and technology. It was fast paced and had engaging characters, despite them always easily finding every clue without issues or dead ends.
What did irk me was the arming of the UK police. Whilst it may have been allowed for the police in that era to carry a firearm it certainly was not common and to have had a regular bobby responding to a disturbance then shooting someone.

I was fascinated to learn of this real place: Turkey’s ancient underground city of Derinkuyu. The story built up slowly but got better over time. I probably enjoyed learning the reality of Derinkuyu more than the book (I did a bunch of Google searches). While not quite the "Da Vinci Code", I appreciate the comparison. This one is a lot slower, though.

Thank you to Netgalley and the publisher for an ARC. #sponsored

Thank you so much to NetGalley and the Publisher for the opportunity to rate and review this title!!

This book hooked me from the first page, and didn’t once let go!! I’m not sure what exactly the official subject is - older but still hunky professor finds gadget that can and does change history and the future - but whether it’s Dan Brown, or now Glenn Cooper, consider it a must buy from me. I truly love standalone thrillers like this, and Cooper is a master at keeping you hooked enough to turn pages late into the night. I look forward to finding more titles from him and going along for the ride!!

What a story! Archeologist finds a unique piece of history. The key looks newer than the site he is working on. He takes the item to another country and finds a group called the Fate Keepers. He learns the story behind a group of keys that fit together. Countries are after the pieces How can something this old fit into the future of disasters? The story is interesting and well written. I enjoyed the book.

The Cosmos Keys by Glenn Cooper is a fantastical scavenger hunt for four part to a machine that can foretell future catastrophes. It was build by Greek scholar, Archimedes, in 212 BCE. With the Romans attacking, he broke it into four components and sent it on its way with four young men. This story follows not only their journeys but the journey of American archeologist, David Birch, and Greek astronomer, Dr Eleni Lillakis. It takes a complicated journey during which people die, Birch loses his grant and his job, and they determine what the Mechani Pepromenou has to tell them. It all started when Birch made a fantastic discovery as he and his team were seeking to excavate the Anatolian underground city of Derinkuyu, built millenia before. They had reached seventeen underground floors. He knew he had made a momentous discovery and his curiosity knew no bounds so he packed up the machine and headed to the person who could help. He discovered a group called the Fate Keepers among a group of Hellenistic worshipers of Zeus. I got complicated quickly. The Fate Keeper had been searching for years, and had hidden clues, which took them to England and to Germany.

There were many characters in the story but only a couple of main ones. Cooper managed to keep them sorted and individualized when it could have gotten too complicated. The plot was good, if fantastical and the book was very readable. Excellent characters, good plot, perfect pacing, and a definite goal. I loved every minute of it. It put me in mind of Steve Berry or Dan Brown in style, although totally fantasy. Good read.

I was invited to read The Cosmos Keys by Book Whisperer. All thoughts and opinions are mine. #Netgalley #BookWhisperer #GlennCooper #TheCosmosKeys

I have read other books by Glenn and have loved them. Adventures stories with historical connections, well researched ones.

This is an intriguing mix of history, archaeology, and high-stakes adventure, somewhat of a cross between an Indiana Jones adventure and the Da Vinci Code. The novel vividly brings to life the scorching heat of Athens and the chilling underground caves of Turkey and Nottingham, immersing the reader in both ancient and modern landscapes.

We have Harvard archaeologist David Birch, who stumbles upon a mysterious bronze artifact in Turkey’s underground city of Derinkuyu. Suspecting a link to a legendary Greek relic, he takes an ethically questionable move and seeks out an expert Eleni in Greece who thinks the artifact is part of a lost mechanism that predicts disasters. Their search for the missing pieces sparks a thrilling chase across Europe. The novel excels in its rich historical details, particularly its exploration of Greek mythology, though the modern-day plot and romance fall flat. Action-packed and immersive, it feels like a cinematic adventure. The sections exploring Greek mythology, legends, and religious beliefs are meticulously detailed and vividly written, undoubtedly the novel’s strongest and most engaging aspects.

But overall, Glenn's Cosmos Key is an entertaining thriller that blends cutting-edge science with ancient mysteries. The concept of a device capable of predicting catastrophes is a fascinating one, and despite its flaws, the book delivers an engaging and imaginative ride.

The Cosmos Keys mixes real facts (there is an Antikythera Mechanism and the underground city of Derinkuyuy really exists) with fiction like the Destiny Machine and it makes a wonderful reading. The story has a lot of mystery and action, it has romance and brings to discussion how mankind might react to learning how things will change and sometimes die. I love history and love to learn about the unkown and the fantastic, if you are a fan of these items this is a book that you must read!
I thank the author, his publisher, and NetGalley for this ARC.

David, a Harvard archaeologist unearths an ancient machine in a dig in Turkey. He goes to Greece to ask for help from Elena Lillakis, a renowned expert on ancient technology. What follows is an adventure to find the other keys to the ancient machine that will tell the future. As they traverse caves, dig up remains, and visit shrines to Zeus, they realize others are also looking for these historic machines and they don't know who to trust.

Mythology, archeology, good old Archimedes and then add more mystery and criminal minds of today, and bang, you have a great story! My favourite part of the story was surprisingly the modern day dig and chase, but all different parts work well together. I liked the keys part in the story, because it gave a bit of a twist, because I have read several books in this genre that reminds me a lot of this one, and to stand out, you need something different and memorable. I recommend this book to readers who enjoy the Indiana Jones kind of a vibe in books.

David is an archeologist on a dig in Turkey when he uncovers a bronze device with Greek writing and a map of the world that wasn’t known when it was created. He asks Eleni for help. She is an expert on ancient technology and their inquiry leads them to secrets that have been hidden for centuries. As they continue to unravel the clues, they must travel across Europe and face others who are also looking for answers. Will David and Eleni solve this ancient puzzle? Is the survival of the human race at stake?

The Cosmos Keys is a stand-alone thriller that will pique the interest of fans of The DaVinci Code and Indiana Jones. No prior knowledge is necessary to enjoy this story, but it will be better for those who already love everything Greek mythology. Cooper’s characters and conspiracies are easy to understand and relate to, which makes this story feel as if you are part of the experience. The Cosmos Keys is a wonderful thriller with a touch of nerdy romance.

The Library of the Dead was the first book I read from this Author, a panicked birthday present from my son, it turned out to be a lucky buy and a good read, and several more followed over the years.
The Cosmos Key vividly portrays the heat of Athens and those cold underground caves in Turkey and Nottingham.
I did find the characters were introduced too quickly, the locations changed really rapidly and it was hard to keep pace sometimes.
I felt the author really prefers to be writing about the Ancient past, his description of Archimedes and his many experiments, the Myths and Legends of Ancient Greece, were so addictive and really sparked my imagination, the excitement of discovering a device that shouldn’t have been possible to create all those centuries ago, I was fascinated by the Antikythera Mechanism,and got distracted by doing some extra reading alongside this novel, there are so many questions and theories to play with!! I much preferred reading about the Ancient Greek world, their religious beliefs and culture, the Oracle of Delphi, these were so well researched and really brought the book to life.
The modern era exploits seemed rushed and quite contrived, the romance, at first full of promise fizzled out, all the events seemed strained.
The Greek and Roman imaginings were by far the stronger in tone and better written.
The modern era was almost saying, “” I have a marvellous idea for a story, how can modern days and ways accommodate this””?
I gave a four star rating for these reasons.
My thanks to Netgalley and the publishers, Book Whisperer, for my advance copy, freely given in exchange for my honest review. I will leave reviews to Goodreads and Amazon UK upon publication.

A cross between Indiana Jones and Dan Brown stories. A joint dig between American and Turkish archaeologists in Anatolia, Turkey discovers an unusual artefact. David Birch, the American Harvard professor thinks it has a connection to a Greek artefact and travels to Greece to meet with the expert Elani Lillakis, and this is where the book lets itself down in my opinion. David takes the Newly discovered artefact to Greece with him, wrong on so many counts.
In Greece David discovers that Elani is a believer of the Ancient Greek gods and believes his artefact is able to foretell future disasters, but only when it is complete.
Here begins a race across Europe to find the other bits, again like Dan Brown’s stories.
Archeology meets mythology. My thanks to NetGalley and the publishers for the arc. 3.5⭐️

Similar in style to 'The Da Vinci Code' just not as well done. Nowhere near the worst book I've ever read, but not the best either.

A creative and clever plot concept combines archeology with technological devices Archimedes invented centuries ago. The Cosmos Keys is an intriguing adventure with interesting characters and a suspense-driven narrative. Glenn Cooper offers readers a fascinating and entertaining read.

Thanks to NetGalley and Book Whisperer for an ARC in exchange for an honest review.

3.5 stars

David Birch finds an interesting artifact on a dig in Turkey's ancient underground leads David on a wild dash across Europe to solve a 2000 year old mystery. I am always impressed when authors can take an ancient artifact and turn it into a solvable modern adventure.

What an interesting and entertaining concept this high-stake thriller gives us. A story with cutting-edge science and an unforgettable adventure into the heart of ancient mystery. The main character in archaeologist David Birch who can be described as mix between Dr. Henry Jones Jr. in” Indiana Jones and Robert Langdon in” The Da Vinci Code”.

In “The Cosmos Keys” we are in the depths of Turkey’s ancient underground city of Derinkuyu where David Birch unearths an intricate bronze object. He turns to renowned expert on ancient technology, Eleni Lillakis, for help. Their search brings them across Europe but they are not the only one seeking this mysterious artefact…danger awaits at every turn. No force will keep David and Eleni to unravel the secrets behind the Destiny Machine before it is too late for humanity.

The author’s background in archaeology shines, no way to deny that his experiences and studies are behind this story. I find it to be a bit overwhelming at times, my lack of knowledge in Greek historical and religious beliefs definitely did not help. Although the author played well around the subjects by giving us an adventure filled with some excitement.

As for the pacing it keeps a steady tempo even when extensive explanations on history, mythology are at the forefront. In hindsight, not my favourite parts I have to admit that I skimmed pretty fast over some.

I like the characters they are well define and their action visual. I could really imagine their every move. Reading this book I though I was watching a movie on the big screen, popcorn and a soda beside me....dream on.

What a crazy concept ….a contraption that can foresee catastrophes…doesn’t this pique your interest…..

I really enjoyed this book. It was an interesting adventure between David and Eleni - very similar vibes as the DaVinci code. And what a crazy concept that there's a way to know what future catastrophic events are going to happen. I'll definitely be exploring other books by this author! Thank you so much to NetGalley and the publisher for a chance to read this book.

2.5 ⭐️ I always enjoy an archaeological dig with some sort of mysterious artifact, and that aspect of this book was really cool. My challenge with this book was that I had a hard time connecting with the characters, and the pacing was strange. Some parts of the book felt very fast while other parts felt very slow. I enjoyed the time jumps with the flashbacks, but sometimes I had a hard time following if we were in the present or in the past.

Overall, an interesting concept, but pacing adjustments could be really helpful to make the story more cohesive.

Thanks NetGalley for the eARC.

I enjoy archeological adventures such as The Davinci Code, and this book is similar as being a country-hopping, historical treasure hunt. Since I have limited historical knowledge, I found this story very involved and exciting without having to worry about any accuracy. I got caught up in David's hunger for knowledge, but really did question his work ethic. I was not surprised about the result of his globe-trotting, but still was excited about his adventure. I really enjoyed the historical chapters and all of the background information. The genius of Archimedes is stressed numerous times in the story, and I appreciate when this is appreciated over celebrity. I found this book to be a combination of The Davinci Code and 2012, with a lot of excitement and danger (mostly in the past, but some in current day). Thank you to BookWhisperer and Netgalley for allowing me to read an ARC copy of this book - This story drew me in and I could not put it down until the end!

I have read a few of Glenn Cooper's books and hoped that this would be as good as The Book of Souls and The Library of the Dead. Sadly, it wasn't. The premise behind the story was interesting, but the writing was repetitive and the characters, shallow.