The Open Door and the Dangling Keys

Last night at around 6:30 PM we drove up and walked our dog Romeo in the North End and passed a house that had the door wide open and keys dangling. It seemed off to me. After our walk we drove by to see if the door was still open. It was and the keys were still dangling. I felt responsible for what I saw, what might have gone wrong and what could go wrong. This haunted me.  So when we arrived home I phoned the police. I hope everyone was okay.