My favourite passage in Robert Louis Stevenson's Kidnapped is the episode in which David Balfour is shipwrecked on the island of Erraid. I sometimes think that Kidnapped goes downhill after the Erraid sequence. There is the hike across Mull and then the chasing through the heather, none of which attends the climatic drama of the early chapters, and the plot settles into true road-movie territory. Whenever I read the book, I always find myself returning to that old Erraid magic!