Holidaze is the tenth episode and mid-season finale of the sixth season and the 112th overall episode of Grey's Anatomy.
Plot[]
As Thanksgiving, Christmas, and New Year's pass, Miranda is visited by her father, William, who disapproves of her choices in life. Meanwhile, Mark and Lexie must cope with the shocking arrival of a woman from his past, and Thatcher Grey questions the Chief's recent behavior as Meredith comes to his defense.