Tom Kaye has a saying about the D.B. Cooper mythos.

“In the D.B. Cooper world, if you have 10 investigations, you’ll have 11 theories on what happened,” said Kaye, the principal investigator for the Cooper Research Team, a group of citizen sleuths who have spent years looking at evidence in the case.

So, then, what happens if you pack nearly 100 Cooper fanatics into the Kiggins Theatre for the second CooperCon? Well, you get a lot of opinions, theories and talk about tie clips. Kaye wasn’t there in person, but the festival organizers replayed a presentation he made at last year’s event all about Cooper’s tie and the particles found on it. Other portions of the day included a talk on parachutes, a presentation on conspiracy theories surrounding the case and a trivia contest that quizzed guests on the names of flight attendants on the plane, what Cooper allegedly ordered to drink and the copycat hijackers who followed in the months after.

Later on Saturday, the Kiggins showed a Cooper-related movie, and today CooperCon guests have the option of taking a road tour of local sites pertaining to the case, or going to a Cooper-themed escape room in Vancouver. The Kiggins is also hosting a radio drama on Wednesday about Cooper.

A relative newcomer to the mystery, Bob Jacobs of Tumwater started digging into the Cooper saga about three years ago, and he won the trivia contest on Saturday. Jacobs, who drove down for the event, remembered living in Ohio in his early 20s when Cooper hijacked Northwest Orient Airlines Flight 305 on Nov. 24, 1971. Cooper leapt out of the plane somewhere over Southwest Washington with $200,000 in ransom; it remains the only unsolved case of sky piracy in American history.

Jacobs knows plenty about the case now, but he doesn’t have a grand theory about Cooper’s supposed masterful escape because the money was never in circulation.