A troubled 17-year old girl was strangled with a shoelace. Was her killer a stranger or an obsessive boyfriend who threatened violence against her? Investigators will spend 22 years trying to find that answer. Episode Info Suzanne Nauman Photo Courtesy of Express Digest Suzanne Nauman Photo Courtesy of Express Digest Crime Scene Evidence Photo Courtesy of Express Digest Crime Scene Evidence Photo Courtesy of Express Digest Crime Scene Evidence Photo Courtesy of Express Digest Crime Scene Evidence Photo Courtesy of Express Digest Keith Gavreau Photo Courtesy of Daily Gazette Keith Gavreau Photo Courtesy of Daily Gazette Additional Source Material Cold Case Files: The 20 Year Scratch 22 years later, wrongfully accused man finds closure, anger DNA solves 1995 Schenectady murder cold case DA: Man who killed self in prison suspected in 2 1990s slayings