Murders and other violent crimes often leave an indelible mark on society. The 18th-century murder of "Beautiful Cigar Girl" Mary Rogers helped the then newly emerging tabloid papers become a fixture in the United States. The Federal Aviation Administration was spurred into requiring electronic screening of passengers and carry-on luggage by a series of highly-publicized hijackings. Abductions of youth gave birth to Amber Alerts and advertising missing children on milk cartons. And popular TV shows like "Law and Order," "CSI," and "Cold Case" document our fascination with police...

Former bank manager Ronald Dalton never got to watch his three young children grow up. In 1989 he was convicted for a crime that never happened. His wife, Brenda, was later ruled to have choked to death on breakfast cereal not strangled as a pathologist had initially claimed. Dalton's daughter, Alison, was in kindergarten when he was charged with second-degree murder in 1988. He attended her high school graduation on June 26, 2000, two days after his conviction was finally overturned.

Behind the proud facade of Canada's criminal justice system lie the shattered lives of the people...