‘NCIS’ Prequel Series Ordered at CBS — But Will Mark Harmon Return?

Who Should Play Young Gibbs in 'NCIS: Origins'? Vote for Mark Harmon's Successor!

'NCIS' Prequel Series About Young Gibbs in the Works with Mark Harmon Producing Alongside His Son

‘NCIS: Origins’ Prequel About Young Gibbs Ordered By CBS From Mark Harmon, Sean Harmon, Gina Lucita Monreal & David J. North