With so little information at this time, do we know they were in bed? The person that called LE said he could see body? Were they downstairs? Was the master bedroom upstairs?We don't, but to me this looks like a calculated hit. ETA: I don't mean some hired thing.
The timing was such that the victims would be in bed.
This person somehow had a way to enter the house.
The murders were carried out with just three gunshots.
This person appears to have taken measures to conceal their identity.
I still get the feeling that the woman that called 911 in April, and the murders between 2-5am are somewhat related. Were the Tepes entertaining on week days? I imagine their phones will have plenty of evidence.