Beckett and Lanie in “The Squab and the Quail”

Beckett

[answers phone] Hey, Lanie. What's up?

Lanie

[on phone] Your cause of death. The poison was a chemically synthesized weaponized agent, similar to the organic compound saxitoxin.

Beckett

Saxitoxin?

Lanie

Mm-hmm. It usually occurs in shellfish, but not this version. Whoever created this had access to a pretty sophisticated lab. And this one's been supercharged. Speaking of supercharged, is it true that you're with Eric Vaughn? I mean, Kate, I know you love Castle and all, but girlfriend...

Beckett

Bye, Lanie. [hangs up]