Weird People And Late Night Disturbances

First, two days after posting the story, strange-looking people rang the doorbell. Having no idea who they were or what they wanted, he didn’t answer the door. They stuck around for a few minutes before getting in their car and leaving.
The next night, something startled him awake, and his dog began to growl. That’s when something either hit his house or someone knocked on a door or window. Who does that in the middle of the night?
Then the scariest thing happened.