Many people enjoy reading murder mysteries, because they are puzzles. Can we guess the murderer's name before the detective tells us at the end of the book? Was the broken chair an accident, or is it an important clue? How did the murderer get into the house? Did he (or she) have a key? Why were there three coffee cups on the table? Agatha Christie's murder mysteries are famous all over the world. She wrote more than seventy books and they have sold millions of copies. There have been many television plays and films of her stories. Her detectives, Hercule Poirot and Miss Marple, are famous too—a short round Belgian with a black moustache, and a dear little old lady, who sees, hears, and remembers everything.This is a story about Agatha Christie's life. What kind of person was she? How much do we know about her? She was rich, famous, and twice married. And there was a mystery in her life, too...