According to concert promoters, the King of Pop even kept his addiction to powerful anaesthetic propofol a secret from his own family, the Daily Star reported.
Michael’s mother and kids have sued tour organisers AEG for 25 billion dollars, claiming that the company worked Michael to death.
But AEG insists that the singer’s long-running drug addiction led to his demise due to overdose in 2009 and not his heavy workload.
The firm said that it had not known that Michael was hooked on the prescription drug when it signed him up for a comeback tour.
Their lawyer Marvin Putnam said that while the world may not have heard of propofol, Michael certainly had and had been using that drug for many years.
He told jurors that there were “two separate Michaels”, the public pop star and the private drug addict.
He asserted that Michael was very good at hiding his addiction and didn’t let anyone see it, neither his staff nor his kids.
He warned that the three-week trial would dredge up “some ugly stuff,” hinting that Michael’s drug habits started from his 2005 acquittal on child molestation charges.
Photos: Priyanka Chopra's family, celebs watch 'Ventilator' at MAMI
Photos: Raveena Tandon, Sohail Khan at Marathi film 'Bhay' music launch
SRK-Gauri anniversary: B-Town stars and their non-filmi better halves
Birthday special: Popular mothers and daughters in Bollywood
Spotted: 'Kaabil' star Hrithik Roshan with dad Rakesh Roshan