Apparently the 2 survivors were in the basement, either sleeping or unable to get out with the door blocked.
It’s possible to kill 4 people in total silence with a knife. It’s happened before. A gun may be used to intimidate but not be fired. The killer holds one person hostage with a gun or a knife at his/her throat, ordering a 2nd to tie up and gag the other 2.
Then the killer holds the knife to one of the bound prisoners, and orders the 3rd to tie up the 4th. The last unbound prisoner, the weakest and least threatening, is tied up by the killer.
All the while he’s promising it’s just a robbery, they will be able to get unbound after he leaves, just be quiet...
Once they are tied up slightly, he can tie them up very securely, and ensure their gags are effective.
Then he is free to torture and knife them one at a time, to increase the terror of the others.
It’s a work of pure evil. I hope the police find him or them very fast. It’s not a one-off crime.
So many murders have been committed that way. In that scenario, I would assume the person with the gun intended to kill all of us.
Today, in the Idaho case, the coroner now is saying the victims were found in their beds and likely were sleeping when attacked. One father said his daughter (who was sleeping with her boyfriend) had self-defense wounds. Sounds like she woke up during the attack. Horrific and heartbreaking.
I thought the surviving roommates were on the top floor of the house.
Regarding the possibility that the killer called 911. Could it be he was growing impatient that no law enforcement activity was at the house as late as 12PM?