It was the first British film to be made of one of Christie 's works .
The film was based on the short story The Coming of Mr. Quin , part of the collection The Mysterious Mr. Quin , which was written by Agatha Christie .
It was the first British film to be made of one of Agatha Christie 's works .
The film was based on the short story The Coming of Mr. Quin , part of the collection The Mysterious Mr. Quin , which was written by Agatha Christie .