Mark Harmon Returning To ‘NCIS: Origins’ As Gibbs For Season 3

Mark Harmon Returning as Gibbs in ‘NCIS: Origins’ Season 3 Story Arc

Mark Harmon Details Working Behind the Scenes on ‘NCIS: Origins’ After ‘NCIS’

11 Actors Were Considered to Play Gibbs on 'NCIS' Before Mark Harmon Landed the Role (Including Two Oscar Winners!)