A highly-popular spin-off series is getting another spin-off of its own, and has lined up two actors to star. According to The Hollywood Reporter, Chris O'Donnell and LL Cool J are in talks to join a spin-off of the hit CBS series NCIS: Naval Criminal Investigative Service.

It is said that a pilot will air as a regular episode of NCIS this spring, following in NCIS's footsteps, as its pilot originally aired as an episode of JAG.

O'Donnell would play Callen, a chameleon-like operative who can assume multiple identities. LL Cool J would play Sam Hannah, a charming tough guy who's also a former Navy SEAL.

Related: CBS Orders Full Seasons of NCIS: Los Angeles and The Good Wife

It wasn't clear when production would start on the pilot as of yet.