Lucky Stiff - S3-E14
Castle: [To Beckett] See? Everyone thinks about it.
Montgomery: Everybody thinks about what?
Castle: What they would do if they won the lottery.
Montgomery: Big ass boat, 60 footer, monster spinnaker hanging off the bow, two deep sea rods, hanging off the stern.
Castle: Sweet.
Beckett: OK, while you guys are fantasizing about the size of your rods, I'm going to go and interrogate our suspect.
Answer: The networks are now having winter breaks. A mid season end of new episodes, when they come back after the new year, it picks up as if several months have gone by. Beckett suggested Valentine's Day as a "chick flick" to watch as she is moved in. Also some episodes are not scheduled to air in order.