During the nationwide manhunt, a Kansas City police sergeant unveiled shocking new details about the suspected extortion letter writer. On a flight to Chicago, he brought two suitcases packed with information to share with the Tylenol Task Force about their suspect. He told investigators the story of a different man. Someone who went missing a few years before the Tylenol murders.

For exclusive details about the Tylenol Murders and a transcript of this episode, visit www.chicagotribune.com/tylenolmurders.