The 32nd Santa Barbara International Film Festival -   Montecito Award: Isabelle HuppertGibbs (Mark Harmon) may meet his match in "NCIS" Season 15.

CBS just announced that Maria Bello will join the show as a series regular. She'll arrive in Episode 4, playing an as-yet unnamed agent. Here's more on the character, from the network:

"[She] was commissioned as a second lieutenant in the army and served two tours in Afghanistan. After joining NCIS, she built her reputation as the agency's premier forensic psychologist. Unlike the other agents, she can second guess and challenge Gibbs, so there will be friction but also mutual respect. She is a positive force, mischievous and at times acerbic."

So she's not a villain or adversary, just someone in a position to give Gibbs crap in a cheeky, fun way.

NCIS executive producers George Schenck and Frank Cardea also shared a statement on the casting:

"We have always been big fans of Maria Bello's work and are excited to be introducing her as an agent who not only has a distinct talent, but also a unique relationship with Gibbs."

In June, it was revealed that Jennifer Esposito will be leaving "NCIS" after one season as a series regular.

"NCIS" Season 15 premieres Tuesday, September 26 on CBS.

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