Could you alter genome sequences to give yourself superhuman advantages? Could you run for miles without fatigue, use two computers at once, absorb multiple media sources simultaneously? That’s the premise of Upgrade. This amazingly researched, fast paced thriller often feels like it’s a movie script, and I suspect it won’t be long before someone snaps it up. Interesting, very well written, the plotting was good but could’ve done with a few more twists and turns, and the ending was a bit too Hollywood, all nicely tidied up, but an absorbing summer read! A very solid 4/5.