Great read, highly recommend!

Too far-fetched. Started of with a good believable story-line and frayed into something out of a bad 1950's science-fiction novel. Not worth the money...

A very interesting storyline but possibly the worst writing I have encountered ever. I will never read another book by these authors and have serious questions about the meaning of NYT Bestseller.

This was a very entertaining story. It was difficult to put down. I'm looking forward to Gideon's next mission.

Suspend your disbelief. The book starts out as an entertaining thriller, then twists around into a fantasy fest. It ends as a prologue to the next book. Somewhat disappointing.

Infantile. I'm embarrassed that I finished it

I have read all their books, they are my favorite authors but this book was not worth reading. Disappointing

If you like a good adventure with different twists, this is the book for you. I couldn’t stop reading and never wanted it to end.

Great action and adventure, but disappointing ending.

I was ashamed that I read the book after making it half way through.