The two major themes of "The Crack in the Code" are reported to be the appearance of a new serial killer -- an enemy meant to significantly alter the course of the season -- and the search for a place that Booth and Brennan (and baby!) can call home. The videos released by FOX definitely reflect those themes.

In the first video, Booth and Brennan do their drive-and-talk thing while discussing living arrangements.



While I'm not entirely sure what an "anthropologist cave" would look like (skeletons? rare artifacts?), that does sound like an excellent and hard-to-find house. Spoilers indicate that the couple may actually find this place before the end of the episode, however. It is a buyer's market, after all.

One question -- if Brennan is not due for another six weeks, when exactly will we get the birth episode?

The second video takes place at the crime scene of the week.

• Why exactly does Hodgins looks so shocked to see Brennan and Booth?
• Will they tell us in the episode which museum/monument that is? Or is it one of those not-real Washington landmarks that Bones likes so much (like, say, the Jeffersonian)?
• You have to be pretty dedicated to your psychosis to paint a message in blood at the top of a presidential statue. I'm just saying...
• Reordering vertebrae in a reconstructed spinal column seems like an odd thing to do, even for a serial killer.
  

The final video takes us to the Royal Diner, where Booth and Brennan are sharing a meal with Sweets.



It sounds like the blood (the blood used to paint the words?) is oddly from someone -- or several someones -- still alive. In other news, it's cute how Sweets is shocked that Brennan would listen to him.

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What sort of message could a killer send with vertebrae? Will Booth and Brennan find a place to live? Or will they just end up back at her place? How will you pass the time until Bones season 7 resumes later this spring? Leave your comments below!

(Image and videos courtesy of FOX)