One possible plot is that Kate is in danger during an undercover operation. Castle, using his connections, gets wind of it and races to the scene. He manages to get her out just in time.
In a 'castle rescues kate fanfic', Castle may start his rescue mission when he discovers Kate has been kidnapped. He first tracks down the location by using his detective skills. Along the way, he might face some dangerous situations but his determination to save Kate keeps him going. When he finds Kate, she is weak but Castle's presence gives her new strength.
One possible plot could be the two characters dealing with the unexpected pregnancy. They might struggle with how to tell their families and friends, and face different reactions from them.
I'm not sure specifically as there could be many different interpretations. It might be a fan - created story where a character named Castle believes that Kate is cheating in the context of their relationship within the fan - created scenario.
I'm not sure specifically as there could be many different fanfics with that title. It might be about a character named Castle who has a strong belief that Kate is alive. Maybe Kate was in some sort of dangerous situation or presumed dead, and Castle is determined to prove she's alive.
Some fanfic writers may have their own personal blogs or websites where they post their Castle fanfics. A Google search using relevant keywords such as 'Castle Kate Beckett pregnant fanfic blog' might lead you to these individual sites. However, be cautious as not all sites may be reliable or have high - quality content.
Yes, it might be a plot point in some fanfic. Fanfic often takes existing characters and creates various scenarios, so it's quite possible that in a particular Castle - related fanfic, Castle could witness Vaughn kissing Kate.
He becomes more withdrawn. Normally Castle is quite social and outgoing, but with Kate gone, he loses his spark. He may stop joking around as much and become more serious.
He'd probably be shocked. Just freeze in place for a moment, not believing what he's seeing.
The main characters are likely Castle and Kate. Castle is the one who believes Kate is alive, so he's a central figure in this fanfic. Kate, whether she's present or just the subject of Castle's belief, is also a main character as the story revolves around her being alive.
Obviously, Castle and Kate are the main characters. Castle is the one who has the belief that Kate is cheating.