The Los Angeles County Coroner's office says Houston's death was accidental. She drowned. But cocaine, Xanax and other drugs were found in her system. Dr. Drew breaks it all down for you in language you can understand. What does the presence of drugs mean? What was the state of Houston's overall health? What about foul play? Was her death preventable? Get the answers to these and other questions from Dr. Drew and his guests.

Watch Dr. Drew tonight and every weeknight at 9 on HLN

The toxicology report on Whitney Houston is expected later this week.  Dr. Drew will ask her former sister-in-law why she didn't intervene to help her, when the singer was clearly struggling with a drug problem. It's an in-depth conversation that will shed light on Houston's relationships, her career, and daughter Bobbi Kristina. Leola Brown says the child is not safe  with those who surround her now.

And Dr. Drew will explore the emotion generated by the Trayvon Martin case.

Let him know what you think!

Watch Dr. Drew tonight and every weeknight at 9 on HLN