here to discuss this further out of los angeles is lisa guerian and on keep from san francisco, erinarie daily, a freelance journalist and author of "generation rx: a story of crisis". >> erin lost her brother to drug addiction. thank you to both of you for joining us. your investigation to the "l.a. times" changed the topic you looked at the connection between prescription drugs and drug overdose deaths. what did you discover? >> right. well, scott glover, we first reported that we discovered out of cdc's statistics that drug deaths had surpassed traffic accidents as a source of mortality. at that point, we decided to discuss the overdose problem. at that time, conventional wisdom was this is this is an issue of abuse, kids taking pills out of their parents' medicine cabinets, that kind of thing. so we decided to take a look at that and see how valid that was. we collected nearly 4,000 death reports from coroners. all involved drug overdoses. what we discovered was in nearly half of the cases, people died all or in part on drugs that were prescribed to them by a doctor. and that kin