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The Top 10 Castle Fanfiction Stories to Read in 2022

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Fans of the TV show Castle know that there are a lot of fan theories floating around, and many of them have turned into incredible Castle fanfiction.

If you are looking for some of the very best Castle fanfiction, keep reading.

We have a list of some of the most popular stories out there.

1. That Star Fall Down

This Castle fanfiction is very popular.

With over 16,000 hits and many comments, there is a lot to enjoy about this story.

It is popular for a very good reason.

The main relationship in this story is between Javier Esposito and Kevin Ryan.

If you are a fan of the show, you know that this is quite the dynamic pairing.

This story’s plot takes a lot of inspiration from Death on the Nile by Agatha Christie.

The author does a phenomenal job of making it feel like a real episode of the show while also giving it a personal twist that readers will love. 

2. Observe and Detect 

This next story is another big hit in the world of Castle fanfiction.

It contains drama, love, and mystery, all the things that make a great story.

It is a rather short story, under 3200 words, but that does not mean that it lacks anything at all.

It is a lot of fun to read, and it will leave you wanting more.

The romance in this story is once again between Esposito and Ryan, but it is not overly romantic.

There are moments of love and playfulness, but also comedy.

It is quite a delightful story.

If you are looking for a short and sweet read that will leave you with a smile on your face, this is certainly the one for you. 

3. Domesticity 

This is another short story at around 6000 words, but it is also very popular.

Believe it or not, this story also focused on Esposito and Ryan.

This fanfiction tells the story of Esposito losing his apartment.

Ryan debates taking him in and ultimately decides to do it.

There is a lot of sweet relationship building and banter between these two, and it is a very simple story.

The perspective shifts between the two of them, so the reader gets a chance to see how they are each feeling about the situation.

The two men have to adjust to living with each other, all while struggling with their feelings.

Fans of the Esposito and Ryan relationship will absolutely love this sweet story. 

4. Kevin Ryan is a Better Detective than His Personal Life Implies

This story takes place after Ryan and Jenny’s breakup.

In contrast to the previous story, in this fanfiction, Esposito takes in Ryan temporarily while he deals with his breakup.

Even after Ryan can move back into his apartment, he still spends nearly all of his time with Esposito.

In this story, there is a bit of drama that unfolds involving Jenny, but it all resolves and ends up being a very charming story.

The reader also gets a look at Esposito’s family, which adds a very nice touch to this story.

It gives it a unique feeling and makes it different from many of the other popular Castle fanfiction. 

5. On Tuesday 

In this Castle fanfiction, we get to take a better look at some of the other major Castle characters, including Esposito and Ryan.

Kate and Richard also play a major role in this story, and the reader gets to see the dynamics between all four of these characters.

It is a very brief read, but it is a lot of fun.

The author does a great job of incorporating humor into the drama.

The author also does a great job of capturing each of the character’s voices, which makes it feel like reading an actual episode of the show.

If you are looking for an excellent fanfiction that will leave you laughing out loud, this is an excellent choice.

It is one of the more popular Castle fanfictions simply due to its humor and sweet story.

While it may have its moments of tension, it is a popular story. 

6. One of Us

Castle and Beckett Fanfiction Fanart

This next Castle fanfiction is quite different from the rest we have looked at so far.

This story features an original character who does not appear in the television show.

The author has created this character to join the world and interact with the rest of the existing characters.

This story takes place sometime during the 5th season of the show, but it exists in an alternate universe.

The main premise of this show is Gates finding out about Beckett and Castle’s relationship.

As you might expect, there is a lot of drama in this story.

It is quite a long fanfiction, the longest we have discussed so far at over 60,000 words.

There are also many jumps throughout time and perspective changes which makes it a dynamic and interesting story. 

7. That’s All

The focus of this story is Esposito and Ryan’s relationship.

The author is excellent at portraying the true voices of the characters, and it makes them really come to life in a fun way.

There are a lot of relationship moments that feel completely true to the show.

This story is another short one that is a very quick read.

It takes place at the end of an episode and gives the reader a bit of insight as to what may have happened after the episode ended.

This episode continuation is a fun way to imagine what could happen next, especially when an episode ends on a bit of a cliffhanger.

For a quick read with a lot of heart, this Castle fanfiction is a great choice. 

8. The Curious Incident of the Roach in the Nighttime 

This story is engaging and charming.

As you probably expect from popular Castle fanfiction by now, this story features Ryan and Esposito as the main focus.

There are a few different points of view that the reader gets to experience throughout this short story, and it really adds a lot to the story.

It makes it intriguing and fun to read because we get to see how many of the different characters are feeling.

This story touches on some adult topics, but that is to be expected, as we know what readers want to see from these characters.

It does not get graphic, and the author keeps it classy and somewhat elusive.

It is one of the more popular fanfictions about the Ryan and Esposito relationship.

There are over 20 comments on this story, and they are all raving about the excellent writing, story progression, and dynamic between the characters. 

9. After a Deadly Affair 

This is one of the longer Castle fanfics.

It is over one million words long, with over 1,000 chapters.

The author of this fanfiction worked on it for over six years, and it is certainly evident in the amount of detail that is included.

Just about every character from the tv show makes an appearance in this massive story, as well as some original characters, as well.

The most interesting aspect of this story is that it takes the characters into many different settings and through many different genres.

There are a lot of chapters that take place in medieval times, and they incorporate a lot of fantasy elements.

There are so many friendships and romantic relationships to explore, as well as workplace dynamics.

The character development is fantastic.

Plus, there are many mysteries to solve and so many exciting chapters that will leave you on the edge of your seat. 

10. The Worst of Words

The final Castle fanfiction I’m going to discuss in this article is certainly a popular one.

There are 133 chapters in this story and thousands of raving reviews.

It is another very unique story that is vastly different from the others in this article.

Each chapter takes the form of journal entries, giving it a very personal and interesting feel.

We get a great look into the characters’ minds from a new perspective.

It is quite different from what we see in the tv show, but it still remains loyal to the personalities of the characters, as well as the relationships they have with each other.

There is romance, comedy, and drama all packed into this incredible story, and it is one you won’t want to miss.

Castle Fanfiction: Conclusion

I hope this article has helped you find some popular Castle fanfics to read!

And if you have questions about this topic, feel free to leave a message in the comments below!

Lastly, if you want to read more about fanfiction on this blog, check out:

The Top 10 Encanto Fanfiction Stories to Read in 2022

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