Kate: "Friends of mine were killed because of me."
Rita: "Their deaths weren't your fault, Kate. Surely you must see that."
Kate: "Still, I got to do something. And you know, maybe in doing it, that'll give me peace and I'll be able to move on."
Rita: "Do you love Castle?"
Kate: "Yeah."
Rita: "Then why do you want to get him killed? Have you forgotten why I never see my husband? Attachments are liabilities, leverage to be used against us by our enemies."
Kate: "So I have to choose between finding the killer and being with Rick? That's ridiculous."
Rita: "That's the job. Five people were killed because of a redacted memo. What do you think is gonna happen if LokSat finds out that you and Castle are working together on this? You're a big girl. Dive down the rabbit hole if you must, but think twice about who you bring with you, because unlike McCord and her team, anybody who dies now, that blood is on you."