My opinion
I enjoyed this book especially because it contains shorter murder mysteries with Hercule Poirot that are really enjoyable to read just before you go to sleep for example, if you don't have the time to read a whole normal-length book from Agatha Christie. It is these 12 mini-mysteries Poirot solves as his last 12 cases before he retires. Though they're short, they are still put in that Agatha Christie way where you can almost never figure out who-dun-it. It was interesting, fast paced and an exciting read. Poirot is just one of those characters that you can't get enough of. Every story in the books is inspired by the mythological labours of Hercules.If you're a Hercule Poirot fan, I'm sure you'll like it. :)