This guy Dave Janda seems to think the Russian's torture specialist was the one responsible for Kashoggi's death.
Said he had a heart attack during the interrogation and it went down hill from there.
The intent was to interrogate Kashoggi, rough him up a little bit and release him.
So Russia was involved in this as the video goes into detail explaining.
Is this also a line of thinking the Anon's have looked into?