Tuesday on NCIS, the team must thwart what they believe is a coordinated attempt by a group of terrorists to detonate a dirty bomb in Washington, D.C., before it's too late.

This week's episode, "Jet Lag," was a bit unusual in that it involved two mysteries unfolding at once, with the team split in two locations. This one looks more conventional.

Here's CBS' promo for the February 2 NCIS installment:

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

As if that weren't complicated enough, Gibbs' legal adversary M. Allison Hart (Rena Sofer) is apparently back as well. Will she act as a thorn in his side yet again?

Click to enlarge some photos from the episode below ...

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