Both of these books are part of Stevenson's historical adventures that are often considered to be great as children's books but can be just as easily read by adults. In Kidnapped, the orphaned narrator finds himself deprived of his inheritance by his bastardly uncle, who after having failed to kill him arranges his kidnapping. However, on the boat, his character begins to show as he leads a mutiny and escape with Alan, a man he befriends on the ship. They find themselves in the political and military turmoil of the Jacobite conflict Scotland, and in their wanderings encounter much danger, intrigue and hardship. Catriona is the sequel, where the narrator falls in love with a lady whose father is less than honourable, adding a sustained romance to the melting pot of events.
Stevenson's narration and style may not be as classically topical and atmospheric like Scott's historical novels, however these two are a good read with fast-paced adventure and intrigue with the troubles of Scotland and greater Europe in the background.