on his hand, and he immediately contacted the police. >> i call the detectives and i let them know cause of death is cyanide poisoning. you need to help them with the manner of death. >> he want to know if autumn had committed suicide, or had been poisoned. in other words, murdered. >> theres a note at my desk saying that the coroner's office had a woman come in who had a lethal level of cyanide in her system. >> cyanide poisoning? >> how many of those have you seen in your career? >> this is my first one. >> soon, autumns mom was given the news about the blood results. she didn't call her niece, sharon king, out in washington. >> she said, are you sitting down? i said okay. and then she said it was cyanide. >> just like that? >> and i was shocked. and i couldn't say anything. i couldn't catch my breath. >> when autumn's colleague, dr. karen rouse, heard that she knew right away that her friend had suffered an agonizing death. as a medical professional i