Bill seems immune to the sun's death rays, at least for a minute or two, after he gorges on Sookie's blood, which turns out not only to be sweetest blood he's ever tasted, but also conveys some powerful properties. This is because Sookie has fairy or alien blood in her veins, being a human-fairy hybrid.
This gives Eric a brilliant idea which he seeks to implement in episode 3.11. If he can make the King think that the sun-resistant effect of Sookie's blood is permanent, then the King will be tempted to see if he can attain the age-old vampire dream of walking in the sun, or being a "dew walker," as he poetically puts it. But the King is a crafty vampire. He'll only try this if Eric demonstrates the Sookie sun tonic's effect first.
And so the final scene shows Eric and the King, handcuffed by Eric's hand, steaming, dying in the sun. It's a powerful end to the penultimate episode of this season.
Other goodies include Tara and rough-tough Sam together at last, Jason and the were-panther, and Jessica and Hoyt back together. But the big story is what will happen to Eric and the King, and I'm guessing - having read none of the books and seen no spoilers - that only the King will die a true, much deserved death.
5-min podcast review of True Blood
See also: True Blood 3.1: Oxygen vs. Phone ... True Blood 3.2: King and Wolves ... True Blood 3.3: Rolling Eyes and Spinning Heads ... True Blood 3.4: Running Hot, Winning Names ... True Blood 3.5: Square, Love, Crown, Power ... True Blood 3.6: True Life and Death ... True Blood 3.7: Lorena and the Magister ... True Blood 3.8: Break Up to Make Up ... True Blood 3.9: The King and the VRA ... True Blood 3.10: "Medieval on TV"
See also from Season 2 True Blood Pours Back In and Love and True Blood in the Air and Likes Coming Together in True Blood and True Blood Boiling and Godric, Eric, and Sookie on the Roof and Maryann vs. the Good in True Blood and Illusion, Eisenhower, and Texting and True Blood Season 2 Finale
See also from Season 1 True Blood Calling ... Penultimate True Blood ... Last Bite of the Season
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The Plot to Save Socrates
"a Da Vinci-esque thriller" - New York Daily News
"Sierra Waters is sexy as hell" - curled up with a good book