"I'm minded of the way a fire spreads in dry bracken when we burn it off the fellside: tongues of flame this way and that—tis human tongues and words that's creeping like flames in brushwood." It all began up at High Gimmerdale with the sheep-stealing, a hateful act in the shepherding fells above the bend in the Lune River—the Crook o' Lune. Then came the fire at Aikengill house and with the leaping of the flames, death, disorder, and dangerous gossip came to the quiet moorlands. Visiting his friends, the Hoggetts, while searching for some farmland to buy up ahead of his retirement, Chief Inspector Robert Macdonald's trip becomes a busman's holiday when he is drawn to investigate the deadly blaze and the deep-rooted motives behind the rising spate of crimes.