Others see him as somewhat flippant and shallow at times, since he can turn on a smile and appeal to just about anyone, or assume he can talk his way out of a bad situation. He makes a lot of sexual remarks to Beckett and tries to pry into her personal life, while denying that he cares about her. He is highly competitive, and cares a lot what others think of him, but also out of touch with his own jealousy. A beautiful woman can easily flatter him and make him feel like a thousand bucks (but it doesn’t hurt his feelings that much if she winds up in jail). He’s outgoing, full of charm, enthusiasm, and flattery… and has an enormous ego. When Beckett asks him how he would plan this crime, Castle outlines a plan that would keep himself safe and get him everything he wants, from the perspective of a criminal. He asks a lot of questions to establish ideas about what is going on, then narrows them down to what seems most rational. He talks about how when he writes a book, it all needs to make sense to him, and have an internal structure that goes with the crime and involves all the clues. He pulls strings with the mayor to get the chance to work longer with Beckettt. Castle isn’t afraid to use loopholes and leverage to get what he wants, even if it isn’t strictly moral or legal. He maintains a sense of gallows humor and is often making bank on crime scenes, seeing them as a place of competition rather than seeing them in an emotional light – he and two of her coworkers make more and more outrageous bets that they can solve this crime first (losers must shave their heads!). He is also delighted with the wonderful and weird, and can’t withhold his enthusiasm even in grisly situations. Beckett and he clash often over Castle solving crimes without evidence and her needing to find it to back him up.

He can be standing in his kitchen, having an unrelated discussion with his daughter Alexis, which reminds him of something related in the case, causing him to know what happened.

He is highly intuitive-always coming up with speculations without any proof, and often solving crimes ahead of his Beckettt based on nothing but conjecture. Castle makes his living as a crime novelist who is delighted to become part of actual investigations after the cops interview him after a serial killer copies one of his books.

Entp serial killers