Tonight on NCIS, Gibbs, DiNozzo, McGee and the rest of the team investigate the shooting of a Marine and uncovers more to his life than anyone would have ever imagined.

Judging by the title, it seems safe to say he was living a duplicitous, secret life of some kind. The only question is what he (and/or his alter ego) was up to before he died.

Here's CBS' promo of "Double Identity" ...

[video url="http://www.tvfanatic.com/videos/double-identity-promo/" title="Double Identity Promo"] [/video]

We'll review NCIS after the episode airs, as well as discuss the key events in our Round Table format. Click to enlarge some promotional photos from tonight's episode ...

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