WATCH: First responders in the Michael Jackson case break silence Almost everyone can remember where they were on June 25, 2009 when the news broke of Michael Jackson's death.The music legend, who was just weeks away from kicking off another massive concert show, died from cardiac arrest caused by a an overdose of propofol and benzodiazepine overdose given to him by Conrad Murray, his personal physician.A legal battle followed and Michael's death was eventually ruled a homicide, but even today the details of his final days remain murky... until now.The TMZ documentary Who Really Killed Michael Jackson? is packed with exclusive and never-before-seen interviews about the King of Pop's final days, from the substances that killed him to the people involved in his addiction.Set to air in Australia on Monday September 12 on Channel Seven, the documentary will delve into the "downward spiral of addiction and despair" that haunted Michael's last months despite publicly seeming like he was on top of the world.It also exposes new details about Dr.