We posted a bunch of NCIS pictures from the upcoming season premiere earlier today. Now here are images from the second season debut of its spinoff, NCIS: Los Angeles.

The two-hour episode airs from 9-11 p.m. on September 21 and will be titled "Human Traffic" and "Black Widow" respectively. It looks like this will be an explosive event ...

As you can see, new series regular Eric Christian Olsen appears as Marty Deeks, his LAPD liaison character from the first season. He presumably receives a promotion.

Expect Daniela Ruah (Kensi) to play a bigger role in the second season premiere and the season overall in addition to Callen (Chris O'Donnell) and Sam (LL Cool J).

Are you excited for the return of NCIS: Los Angeles?

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