‘Yes, I always find trouble.’ An isolated Edwardian lighthouse, mysterious deaths, an unexpected shipwreck, a body-snatching alien: Horror of Fang Rock (1977) distils Doctor Who’s vein of Gothic horror, setting the Doctor in a locale that mirrors and amplifies his duality. The story intersects with the lore of the lighthouse as historical icon, as technological compendium, and as literary allegory, to probe the limits of knowledge, the artifice of class and the dangers of narrative.