This Friday will bring the conclusion to the fascinating Mortis 3-part story arc of The Clone Wars. If parts one and two were any indication, it looks like we're gearing up for a wild ride in the next episode, "Ghosts of Mortis" (S3 Ep. 17). Starwars.com has posted the preview version of the episode guide which includes the following synopsis:
"The Jedi remain stranded on Mortis, and the Son aligned with the dark side of the Force renews his efforts to convert Anakin as the Jedi prepare for a decisive confrontation."