The Nightsisters Trilogy: Feature-Length Cut

Star Wars: The Clone Wars: The Nightsisters Trilogy is a Feature-Length Cut of three episodes in Season Three of Star Wars: The Clone Wars: "Nightsisters," "Monster," and "Witches of the Mist" It was released in January 12, 2011 exclusively for the iTunes Store alongside a 4-minute Behind the Scenes featurette.

Official summary
"After a shocking betrayal by Count Dooku, the assassin Asajj Ventress returns to her people, the magic-wielding Nightsister witches of mist-shrouded Dathomir. To help Ventress plot revenge, the coven leader Mother Talzin unleashes a new dark force of destruction in the galaxy: the monstrous warrior Savage Opress. But this brutish new Sith apprentice is not content to merely remain a weapon of his secret masters, for he proves to have a will of his own."