A breathless sci-fi thriller with smarts and a little depth, “Upgrade” takes place in a mildly dystopic world a bit in the future. A gene criminal policeman, son of a famous scientist who accidentally wreaked havoc and then suicided, takes place in a routine snare mission and then, after an explosion, begins to witness his body and mind altering, the “upgrade” of the title. Family dynamics come into play as our hero battles to deal with his genetic evolution. The author controls the plot well, pens stylishly, and keeps the reader guessing. Upgrade is classy post-Christmas entertainment for those who like intriguing near-future sci-fi.