D
Deleted member 718
Guest
Just because this was his first night shift doesn't mean it was his first night out of the house. He could have had late nights out with his friends-- bars, concerts, sports games, etc. I am going to assume that he knew D's habits in regards to lights in the home at night.
I might add with a baby in the house, there probably were many times the lights were on at night. I find it interesting he was alerted because the lights were on.