Castle, Season 2

[Castle explaining his 'case-breaking' information]

Castle:
Well, I went a little Daddy Dearest on Alexis. And it got me thinking, if I can go this crazy over a violin teacher, how crazy would I go if my daughter was about to marry a scam artist? Crazy enough to kill, maybe?

Beckett:
That is…

Castle:
Inspired?

Beckett:
No.

Castle:
Brilliant?

Beckett:
Mm, mm.

Castle:
Genius?

Beckett:
Uh, uh.

Castle:
What?

Beckett:
Thin!

Castle:
Oh.

Beckett:
We don't have the slightest indication that Elise's father knew that Flectcher was a con artist.

[Ryan and Esposito walk in]

Ryan:
Maybe not. But Castle here suggested that we check gun registration records for Gerry Finnegan.

Esposito:
And guess who happens to own the same caliber handgun as our murder weapon?

Beckett:
Who?

Esposito:
Gerry Finnegan.

Beckett:
Shut the front door!

Castle:
No time for dirty talk, go get changed.