Is there anything more to learn about Michael Jackson? Dateline correspondent, Josh Mankiewicz says, ‘yes.’

Considering the news today that Dr. Conrad Murray was trying to push prosecutors into either charging him or dropping the investigation and case can be made that Mankiewicz is probably right.

Dr. Murray was the physician who administered the fatal dose of Propofol to the pop singer last June. Mankiewicz and his team have obtained a phone message from the doctor to a patient that sounds anything but panicked – though Murray claims he was monitoring Jackson closely at that time.

Mankiewicz won’t divulge where or how they got that voicemail, but the prosecution is certain to make much out of the timeline stamped onto the message.

Still, it won’t be just the doctor on trial. Mankiewicz insists Jackson’s drug problems are sure to be prominent as well.

The King of Pop’s movements after being acquitted of child molestation in 2005 features prominently in the Dateline investigation as well with detailed information.

In short, if you think you’ve heard it all regarding the life and death of Michael Jackson, you ought to tune in because Mankiewicz promises info you haven’t seen or heard before.

Log onto media bars for:

What was on the voicemail obtained by Dateline.

Why that voicemail could be important to the prosecution.

How Dr. Murray could argue his case should it actually go to trial.

Mankiewicz pointing out how it’s premature for Dr. Murray to surrender to authorities before charges are filed.

Mankiewicz chronicling Jackson’s post 2005 molestation trial life.

Dateline airs 9:00 p.m. ET/PT on NBC.