Before reading this book, I had no idea it was a follow up to the author's debut. Goodreads didn't even let me know, and I feel kind of cheated that I didn't have the chance to meet the characters in the first book. Not that I think I can find a copy of the first book any time soon. I'll keep searching and hope.
In any case, I don't think it detracted from the story. The characters felt well introduced and developed in this book, so maybe this can be classed a decent standalone. It is very much an action thriller, with a tech bent. The tech details are not too in-depth, so it's accessible to a wide audience. I'm actually surprised this book doesn't have more reviews on Goodreads because it's a fairly solid story with some interesting characters. Like many books of this genre, the characters are written to fit certain archetypes, but I don't mind that so much. What did frustrate me a little is the pacing, which was at times a bit hit and miss. Also, some of the most engaging characters were not introduced until almost two-thirds into the book. I'm not sure what the purpose of that was - maybe it just fit where the story was heading? But it left me wondering if something could have been changed to introduce those characters in earlier.
A decent read. Glad I forced myself to read it with a random pick. It's made me think about reading more books of this genre.