Wild ride, this one. Still processing the ending...
OK, have had a few days to think about all this. The beginning of the book is off like a shot. Jacob shows up to his first day at Delphi, given his red temp badge, starts to be shown around and then is left to his own devices when his trainer leaves for a big "all-staff-except-lowly-temps" meeting. At which point the unthinkable happens - some sort of yellow gas shows up and turns the permanent employees into something not quite human. They kill a bunch of each other, some kill themselves, all of it very, VERY violent. Jacob is shocked, to say the least.
The rest of the first half of the book is Jacob meeting some other survivors. The reader gets to learn the backstories of Swati, Lauren, and Dominic. They learn they're not the only survivors; there are, of course, more temps. Nice "intermission" chapter that basically says yes, some time passes, different people react to the possible Apocalypse in different ways, etc. I totally appreciated the author not going into all the minute detail as I wasn't terribly interested in it. Maybe I should have been, but I was looking for conflict - and yep, here it came in the form of a saboteur (or saboteurs). Suddenly the easy life the survivors had becomes much more dire.
Overall, I did enjoy this book. I LOVED the fact that the temps were the survivors, seeing a nice play on the old Star Trek "red shirt" trope. I thought the idea of sabotage was brilliant, as it could have been one of the survivors who has suddenly snapped...or it could have been a survivor no one knew about. Then there's the whole idea of Brandt, the leader of Delphi, his almost god-like persona, the many mentions of how the survivors have created a quasi-religion around him and the company. Again, very insightful commentary by the author.
However, I got to the end of the book and felt disappointed. I mean, really? That's it? REALLY???? Ugh. Just...ugh. I understand Lauren and Swati still being hopeful, but I don't share their (jaded) optimism.