A judge has ruled that Michael Jackson's dermatologist will not testify in the trial of Dr. Conrad Murray, the physician accused of involuntary manslaughter in the death of the pop icon. Murray's defense had hoped to use testimony from Dr. Arnold Klein to put forth an argument that Jackson was a drug addict who was ultimately responsible for taking the powerful anesthetic that caused his death in June of 2009.
In court papers, Murray's attorneys suggested that Klein gave Jackson frequent injections of the painkiller Demerol for "no valid medical purpose" and that the singer "became physiologically and psychologically dependent" on the drug.
Photos: Michael Jackson Remembered
Los Angeles Superior Court Judge Michael Pastor ruled that this testimony was not relevant to the case, and also barred witnesses in the case from testifying about Jackson's 2005 trial and acquittal on child molestation charges.