Kate Beckett: They started up about eight weeks ago, according to those e-mails. He met her after one of his... book signings and he asked her out for coffee and that was a... It was just a couple of weeks after we started seeing each other.
Lanie Parish: Oh, sweetie.
Kate Beckett: He told her that needed to keep it a secret, because he was with someone else... And then when he tried to break it off about a week ago, she threatened to go and tell his girlfriend. He offered to come over to her apartment to talk things through. And that was the night of the murder.
Lanie Parish: He had motive... What did Castle say when you talked to him?
Kate Beckett: He said that the e-mails were faked. He said he never wrote that story and that he was being framed...
Kate Beckett: You should have seen him, Lanie. He looked like a little boy, he was so scared... I know him, Lanie... He is... an immature, egotistical... self-centered jackass sometimes, but he's not this.
Read more Kate Beckett Quotes
From: Castle