Hairline

Doctors don't know why the young scientist is gravely ill. When test finally reveal the cause, it's too late to save him. Police hope that lab analysis of his hair - showing when attempts were made on his life and what was used - will lead to the killer.To learn more about how HLN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices