Abridged on three CDs, and read by Nigel Anthony. A famous Poirot story, but one I'd never read before. Beautifully pulled off, although I suspect it suffers a little from the abridgement. Even with the abridgement issues, I loved this. And that's all I'm going to say about it.
http://www.librarything.com/work/3011
http://www.librarything.com/work/3011