"Catriona" by Robert Louis Stevenson is a novel published in 1893 as a sequel to "Kidnapped". The story follows David Balfour as he attempts to secure justice for a man wrongly accused of murder in 18th-century Scotland. When his efforts fail, David meets and falls in love with Catriona Drummond, daughter of an imprisoned Scottish outlaw. Their relationship unfolds across Scotland, Holland, and France amid political intrigue, betrayal, and adventure, as David navigates both dangerous conspiracies and the mysteries of romance.