Goof: Ryan describes the victim as being 28 years old. However, the close-up of the driver's license specifies his date of birth to be March 25, 1978, making him 33 years old at the time the episode aired.
Beckett: Castle, if we were getting married, would you want to know about all the guys that I've slept with?
Beckett: Seriously? You sign women's chests at book readings. You cannot be shocked that I'm not a virgin.
Castle: It's just the word... all, suggests a lot. How many are we talkin'... Exactly?
Beckett: Are you really asking for my number?
Castle: You show me yours, I'll show you mine.
Beckett: Men. You all want to know, but you don't want to know.
Castle: If you found out a man was cheating on you, how would you kill him?
Martha: Knife... to the heart.
Castle: All right. What if you don't have the stomach for that?
Alexis: Shoot him.
Castle: But you don't have the stomach for that either.
Martha: What's wrong with our stomachs?
Alexis: There's always poison.
Martha: True. Watch him writhe and suffer.
Alexis: Die like the rodent he is.
Castle: Wow. All these years writing about murderers, I had no idea I was living among them.
Castle: Suggests premeditation. She knew she was gonna kill him, so she booked the room anonymously.
Beckett: Yeah, but then why sleep with him? Why not just push him out the window?
Castle: Because she's a black widow... The coldest-hearted creature on Earth. She lures an unsuspecting male, takes him into her web, and then the moment they culminate, as soon as he feels the ecstasy of achieving his biological destiny, she opens up her jaws and eats him alive.
Ryan: I'm glad I'm in a healthy relationship.
Beckett: (smiles) Yeah.
Ryan: Castle, Jenny tells me that you RSVP'd plus one.
Beckett: You're bringing a date?
Castle: I am.
Castle: Oh... well, she's beautiful, she's intelligent, she's funny, and the way she smiles at me sometimes just melts my heart. It's Alexis.
International Episode Titles:
Czech Republic: Dokud nás smrt nerozdlí (Till Death Do Us Part)
"Bolero - unreleased" by London Symphony Orchestra & André Pervin
Although credited, Penny Johnson Jerald (Captain Victoria Gates) does not appear in this episode.
Original International Air Dates:
Canada: January 9, 2012 on CTV
Australia: April 22, 2012 on Channel 7
United Kingdom: May 16, 2012 on Alibi
Germany: May 18, 2012 on Kabel 1
Czech Republic: November 14, 2012 on Prima family