The doctor who was with Michael Jackson when he collapsed and died has been charged in connection with his death.
Dr Conrad Murray is accused of involuntary manslaughter, which is when a person didn't mean to kill someone but may be responsible for their death.
He denied the charge at a court in Los Angeles and a judge must now decided whether he should go on trial.
Dr Murray was with the singer at his home before he died on 25 June last year but insists he did nothing wrong.
If he's found guilty he could be jailed for up to four years.