Riley Strain's family is questioning why the belt they know he was wearing didn't secure his pants the night of his disappearance, as they continue to search for answers. Family friend Chris Dingman discussed the mystery surrounding Strain's disappearance and death with NewsNation's Elizabeth Vargas. #rileystrain #missing #vargas Anchor Elizabeth Vargas delivers the biggest stories, without bias or opinion. Watch "Elizabeth Vargas Reports" every weeknight at 6p/5C on NewsNation. #VargasReports NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij