their first case together

Richard Castle appears at the NYPD.
Kate: why is he here?
Ryan: maybe he likes you!
Kate: ...
Roy Montgomery: detective Beckett!
Kate: captain?... yes sir?
Roy Montgomery: Mr. Castle offered to help with the investigation.
Kate: really?!
Richard: is the least i can do for the city i love!
Roy Montgomery: considerating the nature of the crime scenes, i think is good idea!
Kate: ... Sir, can i talk to you for a minute? in private?
Roy Montgomery: NO!

Richard: i'm here for the story.
Kate: the story??
Richard: why those people? why those murders?
Kate: sometimes, there is no story. sometimes the guy is just a psychopath.
Richard: ...there's always a story. always a chain of events makes everything make sense. YOU for example!
Kate: ...
Richard: in normal circumstances, you should NOT be here. good, smart, good looking women become lawyers, NO cops...but, here you are, why??
Kate: i don't know Rick. you're the novelist. you tell me!
Richard: well, you're not a bridge or a tunel. no trace of borough when you talk, that means Manhathan and that means money. you went to college, probably a very good one. you had options. yes...you've had many options, BETTER options. more socialy aceptable aptions, but you still choose this. that tells me that something happened. not to you, was someone you care about, was someone you loved. and you probably could have lived with it...but the person responsable was never caught...
Kate: ...
Richard: and that det. Beckett, is why are you here...
Kate: ... good trick...don't think you know me...
(...)