Let me set the stage. It's about 3am on a weeknight, my wife and I, along with our dachshund are sleeping. I don't sleep terribly well, so it doesn't always take much to wake me up. I don't know if I was already awake or if Ripley (our dachshund) woke me up. Either way, I can hear him growling under the covers. Not the kind of growl when he is dreaming, but growling AT something or someone. The dog is awake.
This alarms me, because it's 3am, and our bedroom door is closed. He is growling at SOMETHING. Every single time someone walks by the house and he is up in the front window or at the door, he will growl or bark. I knew that he was growling for a reason.
I sit up in bed and listen. At this point, my wife wakes up and asks me what I am doing. I shush her and keep listening. There it is. A knock. The dog barks again. I shush him. I keep listening. There is someone knocking on one of my doors. Or maybe it's the neighbors house?
I slowly get out of end and hear the knocking once more before opening my bedroom door. From the doorway, I can see directly out the back slider onto the deck. There is no one there. The house is dark. I don't hear the knocking anymore.
I go back and look out the bedroom window to my neighbors house. I see no one. I then proceed to check out the rest of the house. Slowly tiptoeing through the house I open the side door and....no one. I move to the front of the house and look out of the big front window. Nothing. I open the front door and step out onto the porch and have a look up and down the sidewalk. There is no one there.
Someone was knocking on what, in hindsight, I suspect was the side door of the house. But I saw no one. Also I should mention that you have to open the side gate to get to the side door. The gate was shut. A drunk? I wish I knew, I think.