NCIS

NCIS' Season 9 premiere will focus on Tony DiNozzo (Michael Weatherly) and his hunt for the person who's leaking NCIS intel. But it will also introduce a potentially recurring new character in Scott Wolf's FBI Agent Stratton.

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Stratton is described as an agent who isn't quite what he appears to be. Namely, his nice-guy looks hide a man who can be powerful, cunning and dangerous when the need arises.

So can he be trusted? Based on the exclusive first image from Season 9 below, it seems Gibbs (Mark Harmon) may be asking himself that very question.

"There are a lot of layers to the character of FBI Agent Stratton and I think we're all looking forward to seeing how things evolve," executive producer Gary Glasberg tells TVGuide.com.

How (or if) Wolf's character may be connected to DiNozzo's mole hunt remains a mystery, but Glasberg promises answers — and, of course, more questions. "You're going to get the answer to who was in that photograph — and somebody's going to die," Glasberg teases. "[Tony's] mission sort of wraps itself up, but what happens at the end sort of opens up a whole other aspect to it that will carry us through the season."

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But all the fireworks aren't just at the end of the episode. "I highly, highly recommend that [viewers] make sure to not miss the first five minutes of the episode, because it's going to start with a big bang," Glasberg says.

NCIS
returns Tuesday, Sept. 20 at 8/7c on CBS. Check out the exclusive image: