Anesthesiologist Dr. Jeffrey Swisher says ketamine is not like heroin or cocaine in that it doesn’t create a physical addition. But he tells “Elizabeth Vargas Reports” that it’s very dangerous when abused, as Matthew Perry did. Also: Matt Murphy, a former homicide prosecutor in Orange County, says he’s intrigued that federal, not local, prosecutors are overseeing the case against those liked to Perry’s death. #matthewperry #ketamine #overdosedeath 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