Technically, I read this one before Passenger to Frankfurt, but i'm writing the review after. They kinda go together because they are both Dame Agatha Christie's screeds against the youths.

Unlike Frankfurt, at least this one has Hercule Poirot and Ariadne Oliver, who is growing on me because I get where she's coming from as the dotty writer.

At times, this book is too repetitive, but the puzzle still works. I figured out a good 75% of it, so you know it's not Christie's best, but I was still satisfied.