Tuesday night's NCIS: Los Angeles Season 4 premiere proved that the procedural has come into its own as one of TV's crime dramas. The complex twists, turns and characters just keep getting better each year.

Looking ahead to next week, a drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the team to investigate why the Marine returned to Afghanistan.

More importantly, they must establish if he betrayed the country he fought for.

Watch CBS' first promo for "Recruit" below and see what you think:

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