. >>> plus, doc hollywood. the shocking truth of what goes on between celebrities and doctors in tinseltown. you won't lieve what they can get their hands on. >>> and car wars. we hit the road with the undercover spies who will do anything to get a shot at the secret test cars that are about to hit main street. it's a sneak peek at what's right around the corner. captions paid for by abc, inc. >>> good evening, i'm cynthia mcfadden. we begin tonight with the first public words from dr. conrad murray, the man who was with michael jackson the day he died and now according to his spokesperson has stopped practicing medicine while the investigation into the circumstances of michael jackson's death proceed. this case has raised serious questions about the relationship between celebrity and doctor. according to hollywood insiders, there are plenty of doctors willing to do whatever a star asks of them. even if it means forsaking their hippocratic oath. chris connelly gets the inside story. >> all of my patients and fr

how often do you see these doc hollywoods coming into the lives of celebrities looking for these powerfulenabling them in this dance? >> my job has become about taking patients, addicts, off substances that my peers give them. this is just what i do all day long. nowhere is that more egregious than with celebrities. if you don't have training in addiction, you can get into a serious situation. >> i just was this little miniature pharmacist. i just was on such vast amounts. i'm just shocked sometimes i lived through that. >> reporter: amber smith >> this is going to bring me down, this is going to keep my going. >> reporter: spent 16 years in the grip of an addiction to prescription drugs. >> i never, ever admitted that i had a problem with drugs ever. >> she was adistricted by the time she was a teen-ager. her original symptoms were pelvis pain, headache, overanxiety and panic. once she found doctors to give her what she wanted, she began believing that she couldn't exist, she couldn't live without those medicines. >> i need opiate because that keeps me alive and functioning. >> she quick