Easy to read without becoming tiring. I read it in 1 and a half days. Twist after twist and again..... we will also need... therapy

In general, I don't read books. They seem boring to me. In the last 15 years, I have completed only 3 books. "The Life and Times of Scrooge McDuck" (multiple times), "We Have No Idea," and "The Cure." I read the first 20 pages and thought, "Okay, I'll take it easy, 15-30 minutes every day." Well, I read the rest in one go the next day; it absorbed me that much.

I highly recommend it!!! I have already bought 2 more from the same author and I'm going to start them immediately!
From the moment you start it, you can't stop!

Fantastic book, fantastic plot! I finished it in 2 days. I'm going for the next one by the same author...

Incredible book, the best of all Fitzek's, possibly the best I have ever read! Mind-blowing, it captivates you, I read it in 4 hours during a vacation period.

ASTONISHING!!! It is the second book of Fitzek that I am reading and I will start the third. Incredibly easy to read and it keeps you hooked until the end. I finished it in 2 days. I wanted to read it leisurely, but it wouldn't let me at all.

I have read the experiment by the same author and because I liked it a lot, I decided to read this one as well, which also has very good reviews.
It keeps your interest throughout and the ending is quite surprising.
But... you reach the last sentence of the book and you say WTF... If someone understood what actually happened, please tell us because I missed it.

I do not understand the bad reviews. Perhaps they read the book expecting what truth? As another reviewer mentioned, until shortly before the end, I thought I had understood everything, but because this particular author has a tendency to make crazy twists, I had reservations. Indeed, worthy!

Very good psychological thriller! It keeps you in suspense, makes you wonder about the future, and the twists and turns make it impossible to put down. Easy to read, straightforward writing, and without too many details that tire you out. Buy it!

I bought the book after reading the good reviews! I have read several books of this genre and I can say that this was one of the worst! It is true that it keeps you in suspense, but at some points, you feel like a child is writing it! As for the ending, even though I read from many people that it is surprising, in many parts of the book, you can understand what is happening and therefore, what will happen at the end.... An okay book for vacations, but that's it!

Another excellent psychological thriller by Fitzek.. Fast-paced development without tiring the reader makes them create their own scenarios about what exactly might be happening, for many twists to come at the end, as the author usually does.

The biggest potato I have ever read. 10 years ago the book was released and it flopped, marketing took over and made it a bestseller, you will waste time and money staying away.

Very good. Although I haven't finished it yet, as always, it is not at all tiresome and always interesting.

I am 25 and it is the first book that I managed to complete and even in one day! Perfect! It made me look forward to the next page!

Very good book. Relaxing for reading... When you start it, you don't want to stop... You don't expect the ending at all

One of the best crime/psychological thrillers I have read!
Having read many books in this genre, I can say that I find most of them somewhat predictable. This book kept me on the edge of my seat from beginning to end, unable to predict what would happen next. The ending is so unexpected that it left me with my mouth wide open! Overall, this particular author writes very directly without boring with excessive and unnecessary descriptions. It's worth every last penny you spend on it!