Some popular elementary sherlock x joan fanfictions include 'The Unexpected Alliance'. This one takes their relationship to a new level by creating a situation where they have to form an alliance that goes beyond their usual detective - doctor dynamic. 'The Trust Factor' is another good one. It emphasizes how much they trust each other, which is a crucial aspect of their relationship. And 'The Unspoken Understanding' explores the unspoken communication that exists between them, which is very fascinating.
You can start by visiting fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can simply search for 'elementary sherlock x joan' in the search bar. Another option is FanFiction.net, where you are likely to find a good number of stories related to them as well.
One great 'Sherlock and Joan' fanfiction is 'The Unseen Bond'. It delves deep into their relationship, exploring how they handle cases outside of the regular show plot. Another is 'A New Adventure' which takes them on a journey to a foreign country to solve a mystery that has international implications. There's also 'Joan's Perspective' which is interesting as it's told from Joan's point of view, giving new insights into her thoughts about Sherlock and their partnership.
There's also 'The Baby in 221B'. This fanfic focuses on the comical aspects of having a baby in their apartment. Sherlock's attempts at baby - proofing in his own unique way and Joan's motherly instincts kicking in make for a really fun read. It shows how their relationship evolves even further with the addition of a new family member.
One possible plot twist could be that Joan's kidnapper turns out to be someone she knew in the past, like an old acquaintance with a grudge. Maybe it was someone from her college days who felt she had wronged them in some way.
Another way to find good Sherlock Elementary crossover fanfiction is to join relevant fan groups on social media platforms. For example, on Facebook or Reddit, there are groups dedicated to Sherlock and Elementary. Members often share their favorite fanfics. You can also post a request asking for the best crossovers. This way, you can get recommendations from fans who are really into these shows and their potential crossovers.
Another great one is 'Bella and Sherlock: A Crossover of Worlds'. This story not only combines the characters but also the settings of their respective universes. It creates a whole new world where Bella's abilities and Sherlock's intelligence are put to the test as they face a common enemy that threatens both of their worlds. It's a long and detailed story that really explores their relationship.
Another theme is the protection of the baby. Given their dangerous line of work, they are constantly worried about the safety of their child. This often leads to some tense and exciting plotlines where they use their detective skills to keep the baby out of harm's way. In some fics, this also involves dealing with villains who might target the baby.
It could be a criminal that Sherlock and Joan put away. This person might have escaped from prison or had an accomplice on the outside who planned the kidnapping as revenge. For example, a mastermind criminal who lost a lot because of their capture.
Perhaps in the fanfiction, Joan's pregnancy is a result of a scientific experiment gone wrong. Sherlock then uses his intellect to find a way to ensure the pregnancy progresses safely. They could face opposition from some of their old foes who see the baby as a weakness or a new weapon to use against them. Another plot could be that Joan decides to keep the pregnancy a secret from most people, but Sherlock accidentally reveals it, leading to a series of comical and heartfelt moments.
One common theme is the comparison between the two Sherlocks. Writers often explore how the Benedict Cumberbatch - like Sherlock from the BBC show and the Jonny Lee Miller - based Sherlock in Elementary differ in their deductive methods and personalities. Another theme is the interaction between the side characters. For instance, how Watson from each show would get along or clash.