Arlene Bynon

Bridget Cosma is Judy's sister. She talked to us from her home in Langley, B.C.

Bridget Cosma is Judy's sister. She talked to us from her home in Langley, B.C.

When Judy didn't show up to her shift at McDonald's and come home as expected, it was Bridget, seven years her senior, who went out on a frantic search.

When Judy didn't show up to her shift at McDonald's and come home as expected, it was Bridget, seven years her senior, who went out on a frantic search.

When the Cosmas tried to report Judy missing to their local RCMP detachment, they received the customary response. Nothing could be done before 48 hours had passed, which infuriates Bridget still.

When the Cosmas tried to report Judy missing to their local RCMP detachment, they received the customary response. Nothing could be done before 48 hours had passed, which infuriates Bridget still.

After her body was found, did you know, I mean, when the police came to tell you about it, did they tell you she was murdered then? Good question.

After her body was found, did you know, I mean, when the police came to tell you about it, did they tell you she was murdered then? Good question.

Was that you? Did you go?

Was that you? Did you go?

Like other families we've spoken to, the Cosmas would later piece together how their loved one became acquainted with Olson. Judy had previously attended a Christmas party thrown by a friend's family, and there she'd met Olson. By this time, he was already involved with his soon-to-be wife, Joan. But he was there on a date because he was cheating with a relative of Judy's friend.

Like other families we've spoken to, the Cosmas would later piece together how their loved one became acquainted with Olson. Judy had previously attended a Christmas party thrown by a friend's family, and there she'd met Olson. By this time, he was already involved with his soon-to-be wife, Joan. But he was there on a date because he was cheating with a relative of Judy's friend.

By the next afternoon, Olsen had picked up 17-year-old Louise Chartrand as she was waiting to start her shift at a restaurant in Maple Ridge, B.C. She would be his last victim, his 11th confirmed, before his perverse luck ran out.

By the next afternoon, Olsen had picked up 17-year-old Louise Chartrand as she was waiting to start her shift at a restaurant in Maple Ridge, B.C. She would be his last victim, his 11th confirmed, before his perverse luck ran out.

It was August 12th at night. Olsen had been under now constant surveillance for five days when he was observed picking up two young female hitchhikers. The Mounties followed his car until he pulled over and headed with the girls into a wooded area on Vancouver Island. Knowing the likely fate awaiting the hitchhikers, they couldn't risk waiting to see what happened. They grabbed Olson.

It was August 12th at night. Olsen had been under now constant surveillance for five days when he was observed picking up two young female hitchhikers. The Mounties followed his car until he pulled over and headed with the girls into a wooded area on Vancouver Island. Knowing the likely fate awaiting the hitchhikers, they couldn't risk waiting to see what happened. They grabbed Olson.

While searching his car, in his glove box, they found a notebook. Inside the cover was written Judy Cosma's name.

While searching his car, in his glove box, they found a notebook. Inside the cover was written Judy Cosma's name.

For the next week, the RCMP interrogated Olson intensively. After that, his name was formally tied to the murders, and it exploded in the media.

For the next week, the RCMP interrogated Olson intensively. After that, his name was formally tied to the murders, and it exploded in the media.