Interesting article. I wasn't aware of the dyslexic theory, but I don't believe it for one second, especially considering her prolific output.

Agatha Christie had a fascinating life (including the episode when she mysteriously disappeared and was found later, with no memory of what had happened to her).

There's still a distressing amount of snobbery around Agatha Christie in literary circles. I always point such people in the direction of The Murder of Roger Ackroyd - a particularly ingenious novel. She is one of the absolute greats, and has proved an influence on more than one of my own novels.