Los Angeles prosecutors are expected to play a police interview conducted with the doctor charged with Michael Jackson's death
In it, Dr Conrad Murray lays out his version of events in the final hours of the singer's life.
It details his treatments on Jackson, including his administration of the anaesthetic propofol.
The more-than two hour interview has never been played in public before, nor has a transcript of its contents been released.
Prosecutors will call a Los Angeles police detective to introduce the interview, which was conducted two days after Jackson's death on June 25, 2009.
Murray has pleaded not guilty to involuntary manslaughter.