Tonight on NCIS: Los Angeles, the team must get to the bottom of a high tech mystery involving a Chinese gang, and as usual, it leads somewhere different than you'd expect.

It all starts when the tragic death of a lieutenant commander appears to be a suicide, but the special projects agents uncover evidence corresponding to murder instead.

Looks like a good one, as usual. Here's CBS' promo for "Chinatown" ...

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

Follow the jump for a clip from the episode, in which G. Callen and Sam Hanna do what they do best. No, not bust seedy bad guys. Try act like a married couple at the office ...

[video url="http://www.tvfanatic.com/videos/chinatown-sneak-peek/" title="Chinatown Sneak Peek"] [/video]

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