The Joker did literally change him as a person, a spirit entered him. People said he did not look the same after that role, you can see it in the eyes. I didn't see Dark Knight, but is it true that at the end, he was hanging upside down?
Well his very last film, 'The Imaginarium Of Doctor Parnassus" basically plays out his death. I haven't seen it, but I guess there's a tarot card scene of someone hanging upside down. He was hanging upside down in Dark Knight. His final role was showing that his death was to become a reality. Then Johnny Depp took Heath Ledger's place in that film after he died. I do believe Heath became a sacrifice. These people are demonic.
None of this will make sense if a person doesn't understand the dark forces at work. Even the person who wrote his last film 'The Imaginarium Of Doctor Parnassus' said it was written before Heath died. Yet, the film creepily plays out his death in real time. Dark forces are capable of that.
People should never just blindly believe a "drug overdose". That's their favorite way of covering up celebrity sacrifices.
Nicholson played Joker in the past. He knew how dark it could get and how it could completely take over a person. The Joker is a psychotic sociopathic killer with no empathy. That's why he warned Heath Ledger. Heath said his mind was always racing, but he couldn't sleep. Drugs didn't help. As I said, I do believe he became possessed along the way and it ultimately caused his death. The entertainment industry is evil.
Some of them think that if they die, they will become an immortal God in the afterlife. That's a huge trick of the devil. No one is going to be an immortal God when they die. No one is their own God. There is only one God and it's through Jesus Christ.