[Sacajaweau]

I think the $118,000 is a big clue:

"I've been here before" or

"I know a lot about you" or

"I'm watching you".

[hoosiermama]

Everyone keeps making a big deal about the perp knowing about the $118,000.

If he had indeed been in the house while they were out and he does have computer knowledge, whats keeping him from going into the family records to see that that amount had been deposited in their account....