The sixth-and prequel-"NCIS" spinoff is set in the early '90s and follows a young, tragedy-hardened Jethro Gibbs (Austin Stowell) in his probationary days with the Naval Investigative Service at Camp Pendleton, as he started cracking service crimes under the mentoring of Special Agent Mike Franks (Kyle Schmid). Mariel Molino, Tyla Abercrumbie, Diany Rodriguez, Caleb Foote, Patrick Fischler, Bobby Moynihan also star; Mark Harmon (as the present-day Gibbs) narrates.15 episodes on 4 discs. 10 1/2 hrs. Widescreen; Soundtrack: English; Subtitles: English (SDH).