Dana Jennings reviews "A Dance with Dragons."

Best of all, "Dragons" puts us back in the company of Tyrion Lannister, a bitter but brilliant dwarf whose humor, swagger and utter humanity make him the (often drunken) star of the series. When Tyrion is present, "Song of Ice and Fire" becomes "A Rogue’s Progress, or the Further Ribald Adventures of Tyrion Lannister."

Mr. Martin is a literary dervish, enthralled by complicated characters and vivid language, and bursting with the wild vision of the very best tale tellers. And Tyrion is his grandest creation. A kin slayer and fugitive, Tyrion assumes manifold roles in "Dragons": mummer, soldier, paymaster, slave, river rat and captive. He’s in on the cosmic joke of being a "high-born dwarf" and is quick to give practical Westeros wisdom: "Trust no one. And keep your dragon close." He also notes that “a small man with a big shield will drive the archers mad"

Alyssa Rosenberg's review of "A Dance with Dragons" complete with spoilers.