Imagineering Just Gave Away Three Letters Of The S.E.A. Thief’s Name, And The Missing Artifact May Be A Ridge Jewel

Walt Disney Imagineering's Who Stole S.E.A.'s Artifact conspiracy board, viewed by two people in silhouette

Walt Disney Imagineering has handed fans the answers to the first three riddles in the Society of Explorers and Adventurers mystery that began at D23 in August, when a S.E.A. presentation at the Imagineering booth was supposed to unveil a new artifact and instead announced it had been stolen. A recap posted September 7 lays out a conspiracy board of everything found so far, reveals the three letters the riddles were hiding, T, L and A, and puts a possible name on what went missing: the Ridge Jewel.

Note from the desk of Bonnie Booker, September 2026, titled Letters Known, showing the letters T, L and A
The three letters solved so far. (Walt Disney Imagineering)

The clues arrive on Imagineering’s Instagram account, delivered in character by Bonnie Booker, an archivist for the Society. The board itself dates the three riddles August 18, August 25 and September 1, one every Tuesday, and each one resolves to a single letter. The letters are being released out of order, and the full set will spell the name of whoever took the artifact. If the pattern holds, a fourth riddle could land as soon as September 8.

How The Game Works

Every answer so far has lived inside Disneyland. The first riddle sent solvers to a spot beneath a marquee on a street full of shops and screens, which fans quickly matched to Main Street Cinema and its ticket taker, Tilly, and to the cup of tea she sips. The second was built around a grand circle tour and a rail car described as presidential, language that points to the Disneyland Railroad. The third, released September 1, pointed fans to a letter from Booker describing evidence she has found in the S.E.A. archives. Imagineering has said the riddles can be solved from photos of the park online, so the game is open to fans who cannot make the trip.

Note from the desk of Bonnie Booker, September 2026, titled The Thief, listing what is known: leaves riddles with one letter as each solution, rejected from the S.E.A., potentially stole the Ridge Jewel, leaves clues across different time periods
Booker’s running file on the thief. (Walt Disney Imagineering)

Booker’s own file on the thief now runs four lines: they leave riddles with one letter as each solution, they were rejected from the S.E.A., they potentially stole the Ridge Jewel, and they leave clues across different time periods. The opening riddle had described the culprit as a Society reject with loose ends to tie, which reads like the setup for a new character in the S.E.A. mythology rather than a name fans already know. The board’s suspects column agrees: the one candidate written down, Skipper Andrew, is crossed off with a large NO.

The Conspiracy Board And The Ridge Jewel

Walt Disney Imagineering's Who Stole S.E.A.'s Artifact conspiracy board with suspects, clues, the three riddles dated 8/18, 8/25 and 9/1, a Matterhorn photo, an unknown symbol, the S.E.A. Newsletter and notes on Rainbow Ridge and the Ridge Jewel
The full Who Stole S.E.A.’s Artifact board. (Walt Disney Imagineering)

The September 7 recap is the first time Imagineering has confirmed the solutions itself. The board, headed Who Stole S.E.A.’s Artifact, is covered in the three riddles, the D23 stage photo, the thief’s original taunting note, sticky notes and red string. It also pins up an unexplained symbol, a diamond-shaped glyph annotated with questions about its meaning, origin and whether it is a rune, a code, a hieroglyph or a place, and a photo of Matterhorn Bobsleds with an X note pinned over its corner.

The S.E.A. Newsletter, Issue No. 2196, March 1886, with a Springing Into Action column mentioning Jason Chandler, Rainbow Ridge and the Ridge Jewel, above photos of Rainbow Ridge and its welcome sign
The March 1886 S.E.A. Newsletter that introduces the Ridge Jewel. (Walt Disney Imagineering)

The biggest new piece is an aged S.E.A. Newsletter, Issue No. 2196, dated March 1886. Its lead column reports that Society member Jason Chandler is heading back to the American frontier, where the mining town of Rainbow Ridge is celebrating a discovery in its local mines. The townsfolk call it the Ridge Jewel, and the newsletter describes it as rumored to be a splendid geode unlike any other. Chandler invites any interested members to join his expedition. The photos beneath the column show Rainbow Ridge, the boom town that sits at the foot of Big Thunder Mountain Railroad at Disneyland, and the town’s welcome sign. Booker’s sticky notes ask whether the thief stole the Ridge Jewel, flag Rainbow Ridge with a question mark, and note that researching the geology of the region proved too broad to narrow the search. LaughingPlace has the full image set, and the three answers are on the Instagram post for anyone who wants them.

Why S.E.A. Fans Are Paying Attention

The Society of Explorers and Adventurers is one of Imagineering’s longest-running connective threads, a fictional group of explorers whose members and artifacts appear across Mystic Manor at Hong Kong Disneyland, Tower of Terror and Fortress Explorations at Tokyo DisneySea, and Jungle Cruise and the Skipper Canteen at Magic Kingdom. The Society has a lighter footprint at Disneyland than at the overseas parks, which makes an Anaheim-centered puzzle notable on its own.

The D23 talk also teased a connection between the Society and Matterhorn Bobsleds, which currently carries no S.E.A. elements. The mountain is on the board, but so is that X note, and Booker’s own recap letter raises a different question: how can someone be leaving clues across so many different decades? Imagineering has not said where any of it leads, and nothing in the riddles ties the thief to the mountain directly.

Letter from S.E.A. Archivist Bonnie Booker, September 2026, recapping the riddle hunt, asking how someone can leave clues across so many decades, and pointing to the 1886 newspaper clipping, with a wax seal and the Society of Explorers and Adventurers emblem
Booker’s recap letter to solvers. (Walt Disney Imagineering)

What Comes Next

Three letters in, there is no indication of how long the name is or how many riddles remain. Imagineering has framed the whole exercise as a hunt fans complete together, with Booker calling on solvers to serve as the Society’s field researchers and signing off her latest letter with “until our next chapter.”

Walt Disney Imagineering's Who Stole S.E.A.'s Artifact conspiracy board, viewed by two people in silhouette
(Walt Disney Imagineering)

The puzzle grew out of the same Imagineering pavilion that anchored the D23 show floor, where the Society presentation was one of several booth talks over the weekend. Coverage of the third riddle includes images of Booker’s letter from the archives.

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