Revenge is a dish that is best served cold...or in Jack's case slightly crisped, dosed with lighter fluid, severe blunt force trauma, a couple of stabings, and quite an epic pig gutting.
...and oh my GOD the face on Jack at the end of the episode.
BTW. How scary does that tactical body armor look on Jack? I would sh#t my pants if I saw him coming after me in that getup. That mask is the stuff made of nightmares.