Perhaps Garcia discovers during her pregnancy that she has a long - lost relative who resurfaces. This relative could have a complex past and bring some unexpected drama into Garcia's life. It could also be a source of support for her during the pregnancy, or it could create more problems as she tries to figure out how this new person fits into her life and the life of her future baby.
A plot could involve Garcia's pregnancy being part of a dangerous case. The unsub could target her because of her pregnancy, seeing it as a way to get to the BAU. This would put her and her unborn child in great danger, and the team would have to go all out to protect her. Meanwhile, Garcia could also be dealing with her own fears and insecurities about becoming a mother in such a dangerous world.
Another option could be a new character introduced just for the fanfiction. Maybe someone she meets outside of work, like at a coffee shop or a book club. This would open up a different kind of storyline, as she would be navigating a relationship with someone who isn't part of the BAU world.
Well, you could write a fanfiction where the BAU team gets trapped in a virtual reality world created by a tech - savvy unsub. They have to solve puzzles and cases within this virtual world in order to escape. Or perhaps a story where a new agent joins the team who has a psychic ability that they keep hidden at first. But as the cases progress, this ability starts to surface and help the team in unexpected ways.
One idea could be that the BAU team has to deal with a serial killer who is using ancient psychological torture methods. They have to quickly understand the killer's motives which are deeply rooted in some long - forgotten cultural practices.
One idea could be a vampire using their powers to manipulate crime scenes in ways that baffle the Criminal Minds team. For example, they could use their super speed to move evidence or their mind - control abilities on witnesses. Another plot could involve a vampire who is a serial killer, preying on victims in a pattern that the team has to figure out. Maybe the vampire has a moral code that only certain types of people are their targets, and the team has to understand this code to catch them.
A really interesting plot could involve Emily having to deal with a pregnancy - related complication while on a case. This would add a lot of drama and tension, not only for her character but also for the whole team. They would have to support her while still trying to solve the case. Also, the father of the baby could be a mystery, and the fanfiction could revolve around her trying to figure out how to handle that situation as well. This would make for a very engaging read as it combines personal and professional aspects of her life.
One idea could be that they support each other through the pregnancy journey. Since they are colleagues, they might face challenges at work while being pregnant. For example, JJ could worry about how her field work will be affected, and Morgan could offer his own experiences and support. Another plot could involve their partners' reactions. Maybe JJ's husband is over the moon but also a bit overprotective, and Morgan's partner is equally excited but also has concerns about the danger of his job in the BAU.
Another idea is that their pregnancies could be a result of different circumstances. JJ might be happily married and planned her pregnancy, while Emily could have an unexpected pregnancy. This could lead to different emotional arcs for them. They might also bond over the shared experience of motherhood approaching, despite their initial differences in how they got pregnant.
One interesting plot idea could be a serial killer who targets both the FBI agents from Criminal Minds and the SWAT team members. The two teams have to combine their skills, with the Criminal Minds team analyzing the killer's psyche and the SWAT team providing on - ground protection and tactical support. For example, the killer might be leaving cryptic messages that only the profilers can decipher, while the SWAT team has to deal with the physical threats the killer poses during their investigations.
One idea could be that the Scorpion team is called in to help the Criminal Minds team with a case involving a highly intelligent criminal who is using complex technology to carry out their crimes. For example, the Scorpion team could use their skills to decrypt the criminal's encrypted messages that the Criminal Minds team couldn't crack on their own.
One idea could be that the BAU team from Criminal Minds is called in to investigate a series of murders that seem to have a connection to Dexter's 'hobby'. Dexter, being the secret serial killer who targets other killers, might initially be a suspect. Then, as the story unfolds, they could end up working together to take down a bigger network of criminals that neither could handle alone.