On page 301 of Heat Rises, some of this story is revealed to the reader:
Text: 'Lady Kate Sackett stared forlornly out of the carriage as it bounced along the muddy, rutted byway outside her ancestral village in the northland. She was contemplating the brooding form of the caslte built into the cliffs when a young man on horseback cantered up to her window and kept pace. He was handsome in a rouish way, the sort of rascal who would charm a more naïve woman for his own sport and be gone. "Pleasant morning, m'lady," he said. "The are dangerous woods just ahead. Could I offer to ride along?"'