did he have? >> i mean, dozens through the years. >> narrator: jackson's friend of nearly 20 years. >> michael used his celebrity and he would befriend doctors. i mean, he knew how to get the stuff that he wanted. he was very smart. >> meaning that if he wanted some particular drug he could get that, too. >> yeah. oh, yeah. and he had all sorts of doctors all over beverly hills, frankly, that like i said enabled him. >> narrator: but it was in las vegas that a new doctor first entered jackson's life, cardiologist conrad murray, the doctor that would be with him when he died. their relationship began with a phone call from a hotel suite where jackson was staying. >> one of his children got sick. i don't know which one. then a member of the security team actually knew dr. murray from his vegas practice and recommended him. dr. murray treated jackson's child who got better and the two hit it off. >> narrator: murray had a large practice with a clinic in