I'm not sure if the sister's statement about letting the dog out is fact, or based on what she knew of their regular routine. And Imo, the dog may have been docile towards strangers if it was used to a lot of people coming and going. The dog may have been taught that everyone is their friend and not to bark or be aggressive. Imo.
If a stranger comes to my door, my dogs would run outside and away if he/she let them.
So many post to get through here, but if the police said that multiple people came to the house and we’re speaking to 911, doesn’t that make people think that the killer had locked the doors to the bedroom before he left? That the girls knocked on the door and didn’t get a response so they called Friend thinking that they had passed out or something? It still makes no sense that you wouldn’t call 911 instead of your friends, but it seems to be the only thing that might make sense. And then, wouldn’t you think there would be bloody foot prints and blood on the door knob etc. leaving from the rooms that they would see?
And if there wasn’t apparent blood, how can that be? Doesn’t that lend itself more to that he had outer clothes that he changed off into something else, changed gloves, maybe showered there, maybe shed PPE or something to not leave a ton of blood leaving the rooms and house? Am I missing something to not understand how the roommates could not have seen blood all over outside those rooms?
We don’t know that the body was found before the friends came over, do we? It’s likely the survivors hadn’t even discovered the bodies yet.