The First-Ever Agatha Christie Adaptation Became a Real-Life Mystery

Agatha Christie has been adapted and re-adapted, decade after decade, for almost 100 years. Her pantheon of literature is virtually unmatched, and she is widely cited as the best-selling novelist of all time. What's perhaps most remarkable about the Queen of Crime is that her popularity has never waned, even half a century after her death. The recent series of Kenneth Branagh-led Hercule Poirot films certainly serves as evidence of this, particularly Murder on the Orient Express.