Yes, I believe that has never been established though it has been the hottest topic for the last two seasons. Here in Washington state its on at 10 pm on NBC. Luckily I get the eastern feed of NBC 3 hours earlier so I can see it earlier and if I missed something, watch it again later!
Speakeasy web site (from Wall Street Journal) has a recap of all the shows - good to watch next day if you didn't understand something!