Needs a location
Mystery Meet (http://mysterymeet.org) is hosting their second social dinner in San Francisco on November 13th. They don't tell you where you're going for dinner until 24 hours in advance, so it's for adventurous foodies only. However, there are clues on the website (http://mysterymeet.org/san-francisco).
Tickets are $39 and go on sale on November 7th. The last dinner, at Beast and the Hare (http://mysterymeet.org/dinners/october-2012-dinner-beast-and-the-hare-in-san-francisco/), sold out in less than 3 hours, so it's a good idea to sign up for the email list (http://mysterymeet.org/email/). They also offer text message alerts (http://mysterymeet.org/text-message/) for when tickets go on sale.
More info here. (http://mysterymeet.org/san-francisco/)