There has been much speculation about Dr Conrad Murray and what happened on the night of Michael Jackson's death on June 25, 2009.
After a seven-month investigation, prosecutors in Los Angeles charged the 56-year-old with involuntary manslaughter.
But the doctor, who was with the singer on the night he suffered a cardiac arrest, has repeatedly denied causing Jackson's death.
"I told the truth and I have faith the truth will prevail," he said in a video posted on YouTube last August.
Originally from Grenada, Dr Murray was hired by promoters, at Jackson's request, as the star's personal physician ahead of his 50-date residency in London, 'This Is It'.
Paramedics were called to Jackson's Los Angeles mansion while Dr Murray was performing CPR, according to a recording of the 911 emergency call.
Dr Murray travelled with the singer in the ambulance to UCLA medical centre, where Jackson later died.
Dr Murray was initially interviewed by police in hospital immediately after the singer's death.
He was questioned a second time by police for three hours the following Saturday to help clear up "inconsistencies".
A preliminary autopsy stated that there was no evidence of foul play, but the Jackson family requested that a second autopsy be carried out which raised suspicions.