Attention Mole People: Welcome home!

I've heard of twilight tours before, but this listing is taking it too far!  Why would someone go to the trouble of snapping a pic of the exterior in broad daylight, and then go back to take pix in 3am in the morning!? 

Some very credible hypotheses: 

1. House is located in gang bang central. Those windows are in fact bullet proof. Lifetime supply of bullet proof vests included in sale. Bang Bang! 
   
2. Calling all vampires! This 3bd 2ba $875k  single family is your new home!
   
3. Realtor wants to appeal to buyers who work the graveyard shift. Open home schedule is 2-4.....in the AM! 
   
4. Prior owner was a fugly exhibitionist. Neighbors collectively pooled money to tint his windows black.  
   
5. "Have bats as pets? This is a perfect home for you!" 

Weigh in below with your own nocturnal photophobic hypothesis!