I also find it suspicious that the "white van" was in the driveway the day of the explosion as a TV was being moved.

So.... the homeowners were not present when two mysterious men moved a TV from the house.

I wonder what else these two mysterious men ( who were probably Mark's brother and Mark Gill - former partners in crime) were moving from the house.

I wonder what information Mark or Monserat gave to police to explain why a TV was being removed from house (with Mark's white van) when Mark was not present and supposedly at a casino.

I would be curious to know what vehicle was driven to the casino ( perhaps a car Monserat owns). It is too cold to ride a Harley packed with three days of clothes to be appropraitely worn for gambling.

As for sleuthing.... we need Abbey from NCIS. She would have this figured out in no time!