. . . . . . "Tainted Obligation"@en . . "Season 6, episode 4"@en . . . . . . . . . "Tainted Obligation is the fourth episode of the sixth season and the 106th overall episode of Grey's Anatomy."@en . . . "Tainted Obligation"@en . "Tainted Obligation is the fourth episode of the sixth season and the 106th overall episode of Grey's Anatomy."@en . . . "2009-10-08"^^ . . . . . "Lexie sitting by her father's side."@en . . . . . .