The article discusses several hidden secrets in the popular television show NCIS that most fans might have missed. These secrets are not apparent to the casual viewer and only observed by the most attentive fans.

The first hidden secret is related to the show's title sequence. Every episode, the viewer sees the NCIS logo with the acronym standing for "Naval Criminal Investigative Service." However, what most fans may not have noticed is that the acronym is slightly different in the actual logo shown during the opening credits.

The logo reads "Naval CION Investigative Service" with the letter 'S' missing. This subtle change has gone unnoticed by most viewers.

The second hidden secret involves Agent Gibbs' coffee cup. Throughout the show, Agent Gibbs is frequently seen sipping his coffee from a specific coffee cup. What fans might have missed is that the cup is always empty. Though it may seem like a regular coffee mug, there is never any liquid inside it.

This peculiar detail has puzzled some dedicated fans who have closely observed the show.

Another hidden secret is connected to Abby's necklace. Abby Sciuto, the quirky forensic scientist, is known for her unique style and accessories. One detail that has gone unnoticed is the skull pendant on her necklace. The skull pendant is actually a real human skull that belongs to the actress who portrays Abby, Pauley Perrette.

Perrette decided to incorporate her own bone into the character's style, symbolizing her commitment to the role.

The article also reveals a hidden secret within Gibbs' basement. Gibbs, being a former Marine sniper, has a secret workshop in his basement where he finds solace and works on numerous wooden boats. What most fans may not have realized is that each boat represents a significant episode or a moment in the show.

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