Martin Schneider writes:

The New Yorker Festival blog has lately been teasing its readers with blind previews of the Festival, which takes place October 16-18. Yesterday came the third installment:

Which indie-film actor once played a monarch in a movie directed by his cousin?

The New York Times called which political guru "perhaps the most unlikely media star to emerge" in the 2008 election season?

Which single-named poet studied under Allen Ginsberg at Brooklyn College?

In previous editions we learned of the likely appearance of Rufus Wainwright, E. Annie Proulx, Matthew Weiner, James Franco, Wallace Shawn, and Rachel Maddow. Who are the mystery guests this week?