[billcosby]

From Wikipedia:
January 5, 2013 - "Missing in Action"

"D-Squad discovers that Abafar, the planet they are trapped on, is Separatist-controlled, but they also discover a Republic Clone Commando named Gregor, who has been stranded on the planet as well. They must work together to get off the planet safely."

Seems odd that we must wait 3 weeks to get the conclusion to this unsatisfying arc. Then we get:

S05E13 Jan12 Point of No Return
S05E14 Jan 19 Eminence
S05E15 Jan 26 Shades of Reason

(Note: Those above airdates/titles are from Wikipedia, in conflict with those listed on Wookiepedia)
http://clonewars.wikia.com/wiki/The_Clone_Wars_Season_5