Perhaps a fanfic where Hetty's sister is an old acquaintance of one of the NCIS LA agents. She shows up with a mystery from their past that they all have to solve together. This could lead to flashbacks and revelations about the agent's early days, and how Hetty's sister was a part of it all.
A fanfic that stands out is 'OC's Impact on Callen'. This one focuses on how the OC changes Callen's perspective and his way of handling cases. The OC is portrayed as a strong - willed and intelligent character, and the way they interact with Callen is both engaging and believable. It also has some great action scenes that are typical of the NCIS LA style.
One great 'NCIS LA and NCIS Crossover Fanfiction' is 'The Joint Operation'. It combines the unique characters from both shows really well. The plot usually involves a case that requires the expertise of both teams. It shows how the agents from NCIS and NCIS LA interact, like how Gibbs' no - nonsense approach clashes and also gels with Hetty's more mysterious style of leadership.
You can try fanfiction.net. It has a large collection of fan - made stories, including many 'ncis la crossover fanfic'. Just use the search bar and type in the relevant keywords.
One common theme is the cooperation between the two teams. Since they come from different but related agencies, the fanfictions often focus on how they learn to work together. For example, they might have to overcome differences in their investigative techniques.
The plot could be that Hetty's sister, an original character (oc), comes to work with the NCIS LA team temporarily. She has a unique skill set, like being an expert in a particular type of forensics that the team lacks. However, her presence also stirs up some old rivalries within the agency because of her connection to Hetty.
One great 'ncis la crossover fanfic' is 'The Combined Forces'. It has an interesting plot where the characters from both shows team up to solve a complex international crime. The interactions between the NCIS and NCIS LA teams are really well - written.
A good NCIS LA Max Gentry OC fanfic should have a well - developed OC. The character should have unique traits, goals, and a backstory that makes them fit into the NCIS LA universe. For example, if the OC is a hacker, there should be a reason for their skills.
One reason is the expansion of the universe. By crossing over, fanfiction writers can explore new relationships between characters. They can put characters in situations that test their limits and abilities. Moreover, the fans are already attached to the characters from both shows. So when they are combined, it's like a dream come true. It gives a chance to see how the LA - based agents would handle a case that's more in the realm of the original NCIS and vice versa.
Well, it might be that the OC has a personal connection to an ongoing case. Hetty, being the shrewd character she is, hires the OC to use that connection to the team's advantage. Perhaps the OC has a past with a criminal organization that the NCIS LA team is currently investigating, and their inside knowledge could be crucial.