NCIS fans can breath easy; you're favorite characters are safe...for now.

Michael Weatherly's (Tony) departure marked the start of a new chapter for the CBS procedural, but, in the wake of a two-season renewal, writers aren't looking to gum up the works any further.

Along with Mark Harmon (Gibbs), Pauley Perrette (Abby), Sean Murray (McGee), Rocky Carroll (Vance), and David McCallum (Ducky) have each signed new two-year contracts, according to Deadline. Considering more than half of those actors have been with the series since day one, this comes as good news for viewers who like the tried and true dynamic of the last decade.

That being said, NCIS will not stagnate in the least. Weatherly's exit opened the door for a brand new character, and The '70s Show's Wilmer Valderrama will join the cast as a series regular.

"Valderrama will play a once grounded NCIS field agent who accepted a deep cover assignment years ago and never resurfaced. Many agents don't know he's still on the job or that he's even alive," CBS teased. "Now, he's back and his dedication to job and country has left him an unpredictable, charismatic loose cannon."

Sounds like Valderrama will have Gibbs' spidey senses tingling. Can this newbie be trusted, or has his time undercover left him as wrecked as Brooklyn Nine Nine's Adrian Pimento (albeit in a more dramatic, life-threatening sort of way)?

There is no word on the fate of season 13 guest stars Special Agent Tess Monroe (Sarah Clarke) and MI6's Agent Clayton Reeves (Duane Henry).

Find out more when NCIS returns to CBS on Tuesday Sept. 20 at 8 p.m. ET. The season 14 opener will be followed by the premiere of Weatherly's new series, Bull.

Click the video below to see a preview for the series' latest episode, "Family First."