I'm a big fan of A.W. Wang's writing and his Ten Sigma series. In fact, I think it's the best sci-fi I have read in years.
Echoes is the third installment in the series and it begins with a surprise: instead of Brin, the heroine of the first two books, this time her husband Nick is the main character.
While this might sound strange at first, it works very well and is in fact a very interesting break in Brin's story.
The book begins with Nick following the love of his life into the Ten Sigma program, without knowing what he's signing up for - at all. Nick doesn't really care anyway, because he wants to be where his wife is, period. Even if that's a deadly virtual hell.
(Why do such men only exist in books, btw? lol)
As readers of the first two books know, the Ten Sigma program has been developed to create super soldiers and therefore only the best candidates have a chance of survival - which Nick clearly is not.
What I absolutely love about this book is that Nick is an underdog. While Brin is an overachiever, the "goddess with the red mane", equipped with the most beautiful body in the virtual and the real world alike, Nick is just a normal everyday guy. Ergo, his chances of survival in the deadly game are practically zero.
Following him through the story is a thrill ride and page-turner.
Admittedly, I liked this book even more than book 2 - Renegade, because of the perspective switch, and I have a soft spot for underdogs.
The author is not only a master of writing visual (and often very brutal) action scenes, but he creates a dynamic between his multiple characters, which is on the highest psychological level.
The side story between Nick and Cat is probably the best I have read from Wang so far and with Jet he created an extremely nasty villainess.
If you have read the first two books, what are you waiting for? If you're new to the series, don't hesitate to give it a try.
My highest recommendation to sci-fi and cyberpunk fans.