Nancy Grace: Scientist disappearances and deaths are a pattern ‘Crime Stories’ host Nancy Grace discusses the federal probe into missing scientists and a potential breakthrough in the search for Nancy Guthrie on ‘Hannity.’ NEW You can now listen to Fox News articles! A San Francisco forensics lab that helped crack the Long Island serial killer case is now believed to be involved in the search for answers after the suspected abduction of Nancy Guthrie in Tucson, Arizona. Gilgo Beach killer Rex