An article by St. Louis
Post-Dispatch reporter Heather Ratcliffe dated 4 July 2004 documents the recently re-opened investigation into the 1954 murder of Bonnie Huffman in Cape Girardeau, Missouri. Ratcliffe notes, among other things:
QuoteInvestigators seemed to spend most of their energy administrating polygraph exams. Nearly 100 people were hooked up and questioned, including Bonnie's boyfriend and the man who found her body. Documents show that at least a half dozen people flunked the tests, which then, as now, are regarded as not reliable enough for court anyway. Nobody was detained.
See, "Family, police reopen the case of woman's slaying 50 years ago." (http://www.stltoday.com/stltoday/news/stories.nsf/News/St.+Louis+City+%2F+County/3FCCE821C5D6A99086256EC8001D08DF?OpenDocument&Headline=Family,+police+reopen+the+case+of+woman's+slaying+50+years+a)