"Ordeal by Innocence" by Agatha Christie is a thrilling mystery novel published by HarperCollins in 1991. The book follows the story of Jacko Argyle, who was wrongfully convicted of murdering his mother. The novel touches on themes of suspense, traditional mystery, and detective work, keeping readers on the edge of their seats as the plot unfolds. With a compact size and 272 pages, this paperback edition is perfect for fans of Christie's classic whodunits.