Dogs sniff out wrong suspect; scent lineups questioned - CNN.com

cnn.com — The story of how a veteran law enforcement officer became a murder suspect is at the heart of a controversy over an investigative forensic tool called dog-scent lineups. The Innocence Project of Texas calls the practice "junk science that's being used by prosecutors and judges to convict people."

Dogs sniff out wrong suspect; scent lineups questioned - CNN.com