The man who led the investigation into the 1982 Tylenol murders says James Lewis - convicted in 1983 of writing an extortion letter demanding $1 million to stop the killings - is probably the Tylenol killer. The U.S. Parole Commission declared that James Lewis was indeed the Tylenol killer. In 2009, the Tylenol murders investigation was reactivated and the FBI searched Lewis's apartment in Cambridge, Massachusetts. Is Lewis a legitimate suspect? Or, has he been unjustly vilified by frustrated investigators seeking a scapegoat? Lewis has repeatedly refused to be interviewed about the Tylenol case - until now. Drawing on personal interviews with Lewis, thousands of archived news articles, court documents, and dozens of emails between Lewis and the FBI agent who spent much of his career trying to solve the Tylenol murders, this compelling narrative provides a behind-the-scenes account of the 30-year investigation that targeted James Lewis as the prime suspect for the Tylenol murders.