After this week's journey, or "Turas," the Sons of Anarchy continue their pursuit of the truth, or "Firinne," on next Tuesday's installment, which looks like an explosive episode.

The IRA wants proof that one of their own has flipped and SAMCRO intends to give it to them. With just four episodes remaining this season, the drama is finally picking up.

Here's FX's promo for "Firinne." Watch and see what you think ...

[video url="http://www.tvfanatic.com/videos/firinne-promo/" title="Firinne Promo"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.