Anna Nicole overdosed on prescription painkillers and sleeping meds, the medical examiner who performed the autopsy on Smith reported today, calling the death accidental. There were nine different drugs in her system at the time of her death, including three antidepressants or anti-anxiety drugs—methadone, Lexapro and Zoloft.
Investigators used everything from autopsy records to a radiation counter to rule out foul play. Still, any conclusion is, in the end, a judgment call. "It's one of those things, 'Who knows?'" says Wendy Klein-Schwartz, a medical examiner.