The ABC Murders again contain a truly original plot idea from Agatha Christie. The twist at the end is unexpected. Perhaps too unexpected. For the first time in the Poitor series, I wasn't even looking for a particular murderer, since he is so clearly introduced to the reader from the very beginning. It therefore didn't read like a detective's narrative, but rather like a police/crime story.
Amazing to see how Christie keeps on managing to find truly original plot layouts in this amazing Poitor series.