When two suburban housewives are killed in their homes within a week of each other in May 1970, it leaves the rural areas surrounding Toronto in fear. Thirty years later, the murders are solved, and the man responsible is caught, thanks to the meticulous collection and preservation of DNA evidence. But there is a surprising twist - Ronald West was a Toronto police officer at the time of the murders.

A man who was once accepted into a small Quebec community and commonly referred to as Bill l'Anglais turns out to be a murderer, whose crimes cover nearly twenty years. When he makes four trips from Barrie, ON to Montreal, QC in the fall of 1999 in an accelerating frenzy of rape and murder, he leaves behind a single fingerprint. Through skillful police work and intense surveillance, the police are able to catch their killer in the process of disposing incriminating evidence.