No, it wasn't Col. Mustard in the conservatory with the candlestick.
But after three months, Audi wound up its online mystery game, "The Art of the Heist," last week. The game promoted the A3 hatchback to young buyers.
The game's plot hinged on an A3 that purportedly was stolen from a New York dealership. The car's audio system had a digital memory card that held the key to decoding encrypted messages about plans for a theft of fine art.
Audi and ad agency McKinney and Silver set up a Web site, www.stolena3.com, on which people could follow the story of the team hired to recover the car and several memory cards. The promotion also included appearances of the A3 and actors playing the game characters at several events around the country.
Audi says more than 500,000 people caught at least a glimpse of the game, based on use of the Web site.
So who was the thief? Emile Smithson, one of the game's minor characters.