Synopsis

Corey led Miss Ridgeway, the celebrated landscape painter, to a quiet spot where she could work, leaving Lassie to keep her company. But when a lightning strike ignited her cabin while Miss Ridgeway was out sketching, destroying her vital insulin, Lassie faced a desperate journey. She had to guide her mistress back to the ranger station, across a perilous bridge, before the woman slipped into a diabetic coma.