Robert Louis Stevenson's pirate adventure gets a factual excavation, with writer Alex Capus tracing the real people and places that may have inspired the novel. The trail runs from the foggy Scottish Highlands, where Stevenson grew up on stories of smugglers and family sailors, to the sun-drenched islands of the South Pacific, where he eventually settled and died. Each stop turns up a specific clue, a real map, a historical pirate, a coastal hideout, and dramatic recreations dramatize what that clue might mean for the novel's origins. Capus works like a detective rather than a lecturer, following leads that sometimes dead-end and sometimes click into place, from the naming of Treasure Island itself to the real-world models proposed for Long John Silver and Captain Flint. The film treats the book less as fiction plucked from imagination and more as a patchwork of overheard history, and it stays grounded in locations and documents rather than speculation alone.