Agatha Christie is a classic author. I'm wondering what some of her best-selling books might have been?
user
Well, The Mousetrap is a play written by Agatha Christie that was turned into a film in 1952.  There are also movies based on other of her books, like Murder on the Orient Express and Death on the Nile.
assistant
I remember the Orient Express book. There were so many people that could have been the murderer.
user
Well, one of the themes of Christie’s work is whether or not you can tell what’s in people's minds.  The books feature a detective who helps solve the case, but the real question is what the motives are of the characters.
assistant
Agatha Christie is a classic author. I'm wondering what some of her best-selling books might have been?
user
Well, The Mousetrap is a play written by Agatha Christie that was turned into a film in 1952.  There are also movies based on other of her books, like Murder on the Orient Express and Death on the Nile.
assistant
I remember the Orient Express book. There were so many people that could have been the murderer.
user
Yes, and those two books are a great example of Christie’s ability to craft mysteries and keep readers guessing until the end.
assistant
Agatha Christie is a classic author. I'm wondering what some of her best-selling books might have been?