NCIS: Los Angeles (CBS)
Premieres: Tuesday. Sept. 25 at 9/8c

Where We Left Off: NCIS once again tangled with The Chameleon (guest star Christopher Lambert ), who, after killing Agents Renko and Hunter, the team had to release in order to protect an asset in the Middle East. But before he handed him over, Callen shot The Chameleon in broad daylight and was arrested. Meanwhile, Hetty resigned once again.

What's Next: The show will pick up the very next day, with Callen having been suspended from duty while he's under investigation. Needless to say, tension between team members will be at an all-time high. "There's clearly friction for everyone to see," executive producer Shane Brennan says. "We've never seen them argue like this and Callen just wants to be left alone. … The deeper we get into this story the further Callen seems to fall." And this time, Hetty may not be there to bring him back. "Hetty lost two agents at the end of last season," Brennan says. "Seeing what Callen has done has the same impact. [She feels] you reach a point…where the best thing you can hope is that it's the other guy that dies and you're the one who walks away. That's why she's done what she's done."