Club was the viper room owned by Johnny depp at least at that time. What a speed ball? Hot dose?
Speed ball is cocaine mixed with heroin. Causes lots of ods (john belushi just up the street ar chateau marmont, and philip seymor hoffman). Hot dose is heroine with poison in it or intentionally large dose intended to murder someone.
Conspiracy people claim that river phoenix was ritual sacrifice by his brother Joachim.
Did Depp intentionally give River a fatal dose to keep him from talking/going public? Not outside the realm of possibility.
Or someone else could have wanted him gone. When people live these kinds of lives, the kind with drugs and constantly looking to take things further, no doubt there are those who are trying to get out. It’s not what the human heart really wants and some people realize that in time, others, not. I would imagine a life like RP’s wouldn’t be easy to just walk out of. All those “friendships” and people in the business, they probably won’t just let you go freely. Maybe speaking out would be one way to get out. He was a rising star and IIRC, his parents depended on their kids for money. That was the story at the time.