I know that is what Q said.
But the facts of the situation and the weird behavior of the family (especially the brother) make this the most likely scenario.
Otherwise you have to believe that NONE of the people involved (hospital, police, paramedics, etc) would be willing to come forward and explain the complete lockdown of information. That they would allow a murder and coverup.
Seriously… we've never been able to get any of the traffic or body cameras?
Autopsy report?
The only unsolved homicide in DC in what…a decade?