The 'Blue Bloods' alum will be a series regular on the CBS drama, which also has promoted Duane Henry.

CBS' NCIS is bulking up for season 14.

The veteran procedural has enlisted Blue Bloods alum Jennifer Esposito as a series regular and promoted Duane Henry from guest star to regular, The Hollywood Reporter has learned.

Esposito will play NCIS special agent Alexandra "Alex" Quinn, an experienced agent who left field work and became an instructor at the Law Enforcement Training Center. Special Agent Leroy Gibbs (star Mark Harmon) will lure her back into the field as part of his team, where he will take advantage of her sharp wit, quick mind and immense talent as a federal agent.

The character will be introduced in the season 14 premiere, set for Tuesday, Sept. 20, at 8 p.m. ET/PT.

"We couldn’t be happier to have Jennifer Esposito joining us for season 14," showrunner Gary Glasberg said Monday in a statement. "She embodies everything that we hoped for in the character of Quinn and we can’t wait to have her come be a part of our team."

The casting brings Esposito, who is repped by CAA, Carissa Stewart and attorney Marcy Morris, into the CBS fold following runs on Blue Bloods and Judging Amy. Her credits also include The Affair, Mistresses, Rescue Me, Spin City and Samantha Who?

The casting also comes after the actress blasted CBS in 2012 after she was placed on a leave of absence following her struggles with Celiac disease.

Henry, meanwhile, has been promoted to series regular after guest starring on the final two episodes of season 13. He plays MI6 officer Clayton Reeves, who rose above his British blue-collar roots to become a successful government agent. Offbeat and fun with swagger to spare, he has a professional confidence that’s impossible to disregard. To say Reeves has burned some bridges in the international intelligence community is an understatement, but he owns the choices he’s made and is determined to do what's right.

Esposito and Henry join fellow recent addition Wilmer Valderrama, who also is joining TV's most-watched drama as a series regular.

The casting additions arrive as NCIS is heading into its first season without co-star Michael Weatherly, who exited last season and will now topline CBS drama Bull.