In the early 1980s, a sexual predator was prowling Vancouver neighbourhoods, among them Mount Pleasant, attacking young women in their ground floor apartments and basement suites.

Many of the assaults were committed late at night, at knifepoint, with the attacker telling his victims he was looking for someone who'd ripped him off. As it was dark and their assailant sometimes had a turtleneck pulled up over his face, victims rarely saw his face, so police had few leads.

Eventually, one victim got enough of a glimpse to allow police to produce an artist's sketch. It bore a resemblance to a suspect police would soon decide was their man: a 35-year-old labourer named Ivan Henry.

Henry was tried and then convicted for sex attacks on eight women. He was declared a dangerous offender and locked up indefinitely. But from the beginning, he maintained his innocence. And Ivan Henry never wavered.

Despite being acquitted of all charges and being released from prison after 27 years, Ivan Henry finds that he is not 'factually innocent.'