Mad Men creator Matt Weiner’s obsession with confidentiality is no secret. The show’s actors keep mum in interviews, terrified of letting slip even the tiniest hint of a sliver of a spoiler. When reviewers received advance copies of the show’s sixth season premiere this year, they were instructed not to reveal what year the episode took place, the existence of any new characters, and “whether the agency has expanded to an additional floor.” And according to star Jon Hamm, new featured guest star Linda Cardellini wasn’t even allowed to attend the show’s premiere — since doing so would have effectively announced that she’s on Mad Men this season.
Jon Stewart was fascinated by this anecdote when Hamm told it on The Daily Show last night. “The CIA cannot keep their people from being outed!” the comedian exclaimed. “How do you, in a cast and a set, and with all the people–”
That’s when Hamm interrupted Stewart, revealing the secret to Mad Men‘s secret-keeping success. It’s simple: “We frequent, as a cast, far fewer Venezuelan prostitutes than the CIA. Just as a group.” Point: Don Draper.