While the preview we just posted will give you a lot more information, it should still be noted that the preview version of the episode guide for TCW: "Assassin" (S3 Ep. 7) is now online with the following synopsis:
"Tasked to protect Senator Padm? Amidala during a political mission to Alderaan, Padawan Ahsoka Tano is plagued by recurring visions of the recently-deceased bounty hunter, Aurra Sing."