The popular television show NCIS has a fan base that spans the globe. Fans are invested in the characters and their storylines, but there are some hidden secrets about the cast that fans might not be aware of. These secrets delve into the personal lives and unexpected talents of the actors.

One hidden secret involves Sean Murray, who plays Timothy McGee on the show. Fans might not know that he is actually the stepson of Donald P.

Bellisario, the creator of NCIS. Murray's stepfather actually wrote the character of McGee with him in mind, making the role a perfect fit. This familial connection adds an interesting layer to the character's development.

Another hidden secret involves David McCallum, who plays Dr. Donald "Ducky" Mallard on the show. McCallum is not just an actor, but also a talented musician. He actually played the bass guitar on the popular song "Good Vibrations" by The Beach Boys in the 1960s.

Many fans might not be aware of this hidden talent that McCallum possesses.

One of the show's main stars, Mark Harmon, who plays Leroy Jethro Gibbs, also has a hidden secret. Before his acting career took off, Harmon had a successful career as a college football player.

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