Part 2 of 4
Later, Araragi meets up with Oshino Meme, who quizzes him about Hanekawa. He reveals everything except the secret he was sworn not to tell, including finding and burying a silver cat with no tail. From this, Oshino warns that Hanekawa may have been possessed by an Oddity, the Curse Cat. He instructs Araragi to find Hanekawa, whilst he looks for the shallow grave they dug for the silver cat. Araragi finds Hanekawa, but things then take a turn for the worse...
Aired 31/12/2012EP 3 - Part 2 of 4

Nekomonogatari Black
First season of the Monogatari Series, part 6/6. Contains the arc Tsubasa Family from the Nekomonogatari Black light novel.
On his way to the bookstore, Koyomi Araragi encounters Tsubasa Hanekawa whose face is covered with a bandage. The incident allows Koyomi to learn what has been happening in the Hanekawa household, but Tsubasa begs him not to tell anyone about it, saying she’ll do anything to keep him quiet. Without revealing her family’s circumstances, Koyomi tells of the day’s incident - he and Tsubasa buried a “cat” that had been hit by a car- to Meme Oshino. Meme tells Koyomi that he must immediately go to confirm Hanekawa’s safety. He heads to her house, only to find...
So begins the nightmarish nine days of Golden Week.
(Source: Aniplex)