Many are curious to know why Gibbs, portrayed by Austin Stowell, killed Pedro Hernandez in NCIS: Origins. The latest episode titled “Vivo o Muerto” features a young woman who, after savoring a clubbing night,

In the December 9 episode titled “Vivo o Muerto,” a case of a missing woman ends up answering some burning questions about Leroy Gibbs' past.

Mark created a very specific cadence with Gibbs ... I know that I will never be Mark Harmon, but I’m giving it my best shot.”