(Castle is worried about Alexis' vlog)
Castle: This is not safe.
Martha: Darling, when did you get to be such a fuddy-duddy? Believe me, you were far worse in your day.
Castle: My day is not today. That day is not today. Today is the day of the Internet stalker. Today is the day for-- (his phone starts ringing)
Martha: Darling, why don't you just answer your phone? Oh, and it's Beckett. Maybe she has a nice murder to distract you from your parental paranoia.