Plus, what about future crossovers and more Mark Harmon?

Plus, the star teases the Season 23 finale.

Plus, where might Randy be in the present day?

Plus, what almost didn't make the cut?

The prequel follows Gibbs' early days at NIS.

Plus, how Gibbs came up with Rule 13.

Plus, Randy books a slot at the Laugh Lodge ... only to be bumped by another redhead comedian.

The Season 23 finale airs May 12.

Series stars LL COOL J and Scott Caan.

Plus, why Katrina Law wants to cross paths with Scott Caan on the new 'New York' spinoff.