The Murder of Roger Ackroyd
In 1955, Christie was the first recipient of the Mystery Writers of America's Grand Master Award. Later that year, "Witness for the Prosecution" received an Edgar Award for best play. In 2013, she was voted the best crime writer and "The Murder of Roger Ackroyd" the best crime novel ever by 600 professional novelists of the Crime Writers' Association. In September 2015, "And Then There Were None" was named the "World's Favourite Christie" in a vote sponsored by the author's estate. Most of Christie's books and short stories have been adapted for television, radio, video games, and graphic novels. More than 30 feature films are based on her work.