In fanfiction, it could be that the NCIS has some sort of magical knowledge or artifacts. Maybe they've been dealing with cases that are on the fringes of the wizarding world without realizing it. When they discover that Harry Potter is in danger, they use this knowledge or these artifacts to save him. For instance, they could have an ancient amulet that can counter dark magic spells aimed at Harry.
Another possibility is that there is some sort of crossover magic. Maybe a spell goes wrong and links the NCIS world to the Harry Potter world. The NCIS agents, being the resourceful people they are, quickly adapt to the situation. They learn about the danger Harry is in, perhaps from Hermione who has some knowledge of both worlds now. Then they use their own brand of justice and skills to save Harry from whatever dark forces are after him.
In some fanfictions, Harry might be saved by NCIS through their excellent investigative skills. They could uncover a plot against Harry in time, using their resources to track down the bad guys before any harm comes to Harry.
One common scenario could be Harry being framed for a crime he didn't commit. NCIS steps in to investigate and realizes the truth, thus saving Harry from unjust imprisonment.
Well, identity is a common theme. In these fanfictions, characters often have to re - evaluate who they are when they are exposed to a new world. For instance, an NCIS agent might question their beliefs when faced with real magic. And in some fanfics, there's also a theme of family. The strong family - like bonds in the Harry Potter series are sometimes incorporated into the NCIS team dynamics, creating a sense of unity and loyalty within the group that helps them face the challenges that come from the combination of the two worlds.
In fanfiction, Harry Potter as an NCIS agent might use his magical skills in unique ways. For example, he could use a spell to quickly analyze evidence that would otherwise take hours for normal agents. His ability to sense danger, developed from his years fighting Voldemort, would make him excellent at detecting threats on the job.
The crossovers of magic and modern crime - solving are really interesting. For instance, seeing how spells from Harry Potter can be used in the context of NCIS investigations, like using a 'Revelio' spell to find hidden evidence.
Another theme is cooperation. In many fanfictions, the characters from both universes have to work together. For example, Harry and Gibbs might team up to solve a mystery that involves both magic and normal criminal activities. They bring their own unique skills to the table, like Harry's knowledge of magic and Gibbs' intuition in solving crimes.
In this fanfiction, perhaps Harry Potter is brought into NCIS because there are rumors of a wizard - made weapon being used in crimes. He would have to navigate the non - magical world of law enforcement while also keeping his own magical identity a secret. His owl, Hedwig, could be used to send messages in a discreet way that NCIS could benefit from. He might also introduce some of his wizard friends, like Hermione, to help with research using magic - enhanced techniques.
A major theme is adaptation. How would the characters from Harry Potter adapt to the rules and norms of the NCIS world and vice versa? Also, mystery - solving is often a big part. The NCIS agents' skills in solving crimes are combined with the magical knowledge of the Harry Potter characters to solve complex cases that involve both magic and non - magic elements. It's really interesting to see how the two different sets of skills are used together.