During Seasons 1 and 2 of Outer Banks, fans learn that the Royal Merchant's cook, Denmark Tanny, survives the shipwreck and keeps part of the treasure to free the other enslaved people on Kildare Island. He also establishes what would later become Tannyhill Plantation, the future home of the Cameron family.

Ward Cameron initially discovers the Tanny diary on the property but donates it to the University of North Carolina at Chapel Hill.

John B and Sarah take a trip to the UNC library to take pictures of the diary. The duo asks their history teacher Mr. Sunn, who reads Gullah, to help them interpret the letters Denmark Tanny left for his descendants to help them find the gold buried in Kildare (including the Cross of Santo Domingo). The diary remains in Mr. Sunn's possession but John B makes a copy of the pages. After the Pogues discover the gold, Ward and Rafe Cameron ultimately escape with it in their possession.

During Season 3, fans learn that John B has stashed their copies of the diary in his old VW van, known as "The Twinkie," for safekeeping. John B left the van exposed to the elements when he became a castaway, and when Big John returns to hunt down the dairy pages, he finds them completely waterlogged from the rain.

John B and Big John know that Mr. Sunn has the original copy of the diary, but by the time they arrive at his home, smugglers under the employ of Carlos Singh have already stolen it. After a fight that takes place on land and at sea, Big John kills the smugglers, who were planning to kill John B, and takes the diary.

So, when Carlos Singh asks Kie who has the diary, she's not lying — she only knew about the copies. The group then uses the diary to uncover more clues that will lead them to the ultimate treasure: El Dorado.

Fans will have to tune into Outer Banks Season 3 on Netflix for all the exciting details!