I enjoyed listening to this sci-fi tech thriller that reveals how the Chess Team was originally formed. I liked how the authors made the military aspect of this story feel realistic, though it was a little hard to follow at times as the call signs for the characters changed as the new team was formed. It is an action packed sci-fi story with battles, camaraderie, treachery, losses, mutated humans and world ending threats. The narrator did a good job of moving the story forward and giving the characters individual voices (which helped id the characters when the call signs changed). I liked how the authors gave the science fiction portions somewhat of a plausible explanations and included bits of realistic history such as the 600 year old Voynich Manuscript, that has actually stumped cryptologists for years. This is an entertaining story that fans of the Chess Team will love.