Originally Posted by DrNefario
The Murder of Roger Ackroyd is the third Poirot. It probably isn't really necessary to read them in order, but there are only two to read beforehand.
Oh bugger! I read it back in the 70's, and could have sworn that Poirot's sidekick was Hastings in that book. Okay, that's the last thing I ever say about an Agatha Christie book on this board. My memory is too suspect.