Following Callen’s shocking public shooting of the Chameleon at the end of May's season finale cliffhanger, all is not well with the NCIS: LA team when the series returns after NCIS September 25.

Not surprisingly, Callen (Chris O'Donnell) is placed on suspension following his Seven-esque slaying of his nemesis, while the newly-resigned Hetty (Linda Hunt) is adjusting to retired life.

How long will Hetty and Callen stay on the shelf? How will the "Endgame" play out?

Click to enlarge CBS' photo gallery from the Season 4 premiere and tell us below:

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