He was a carefree teenaged hippie just passing through Saskatoon on Jan. 31, 1969 — the same day nursing assistant Gail Miller was raped and stabbed to death in a back alley. On the strength of sketchy forensics and unreliable witnesses, David Milgaard was convicted of the crime and sentenced to life in prison. Twenty years later, his case made national headlines as his mother Joyce confronted politicians in a bid to free her son from jail. By the time he was cleared in 1997, David Milgaard had become one of the most famous examples of wrongful conviction in Canada.