In a fanfiction plot, Jamie could be kidnapped by a deranged fan of one of his cases. This person idolizes the criminals he's caught and wants to make Jamie pay. The Reagan family races against time to find him before the kidnapper's twisted plan is carried out. Meanwhile, Jamie tries to use his wits and training to escape or at least hold out until rescue comes.
Perhaps an escaped convict who has a grudge against the Reagan family in general and sees Jamie as an easy target. This convict might be looking to use Jamie as a bargaining chip to get out of the country or something similar.
The OC could be a new recruit in the police force where Jamie works. They get paired up on a difficult assignment and have to learn to work together. Along the way, they face challenges both in the case and in their personal relationship, like differences in their approaches to policing. For example, the OC might be more by - the - book while Jamie is more instinctive. As they overcome these differences, a romantic connection begins to form.
A simple title could be 'Jamie Reagan and the OC: An Unlikely Bond'.
Some popular Jamie Reagan fanfiction stories might involve him taking on heroic roles in different scenarios. He could be the one to solve a major crime that the whole precinct has been struggling with. In some fanfictions, he might also be involved in community service - based stories, where he uses his position and skills to help the local neighborhood in ways that the show might not have explored yet.
One common plotline could be Jamie getting hurt during a dangerous police operation. For example, he might be chasing a suspect in a rough neighborhood and get injured while trying to make an arrest. Another plotline could involve him being hurt in a car accident while on duty, which then leads to his fellow officers rallying around him. There could also be a plot where Jamie is hurt by an unexpected betrayal from someone he trusts within the police force, which then delves into his emotional turmoil as he recovers.
A great Jamie Reagan OC fanfiction often has a well - developed original character. The character should have a unique personality and backstory that fits well within the Blue Bloods universe. For example, if the OC is a love interest for Jamie, their relationship should develop in a believable way.
In this fanfiction, it might be that Phil Sanfino is under the control of some other force. He kidnaps Jamie as part of a larger plan. Maybe there's a mysterious organization pulling the strings, and they need Jamie for some experiment or ransom. The story could then revolve around Jamie trying to escape and figure out what's really going on while also dealing with Phil, who may or may not be a willing participant in the kidnapping.
In this fanfiction scenario, Jamie could be kidnapped by a group of nightmare creatures who have broken away from Pitch's control. They might believe that Jamie holds the key to a new world order where nightmares rule. The Guardians would have to work together more closely than ever. North would use his workshop and his knowledge of the world to strategize. Bunny could use his tunnels to get to places quickly, and Sandy would send out his dream sand to try and communicate with Jamie in his sleep, all while trying to figure out how to defeat these rogue nightmare creatures and rescue Jamie.
There's a chance that Jamie himself could rescue himself. He might be really smart and find a way to outwit Phil Sanfino. Maybe he discovers a weakness in Phil's security or manages to turn Phil's minions against him. This would make Jamie a very strong and independent character in the fanfiction.
You can start by looking on fanfiction - specific websites such as Archive of Our Own (AO3). It has a large collection of fan - created works, and you can search for Jamie Reagan fanfiction there. Another option is FanFiction.net, which also has a wide range of stories. Just use the search function on these sites and type in 'Jamie Reagan' to find relevant fanfictions.