Last year, Audette found renewed hope that Justin's killing might be solved. During one of her visits to prison for her prayer group, a young inmate approached and asked if she'd pray for him. He had an upcoming court appearance.
While they were talking, she spotted another inmate out of the corner of her eye. He'd picked up her pen and was writing something on a scrap of paper.
"He said, 'Miss, take this,'" she recalled.
She couldn't. It's against prison rules. He said, "Miss, just read it then."
It said: "The man who killed your son was," and then a name.
The man who was identified by the inmate was shot and killed about a year after Justin. CBC is not naming him in order to protect the identity of his sister, who agreed to talk to us.
She says she knows that her brother, who was 21 when he died, was involved in street violence but finds it hard to believe he could have killed someone.
"I can't see or picture my brother, you know, pulling the trigger and taking another person's life. But again, I can't, I couldn’t say for sure," she said.
"[There are] a lot of pieces of the puzzle missing.”
Audette still has the note — she broke the prison rules and took it with her, which got her suspended from the volunteer program. It's fragile and stays in her purse, worn through where it’s been folded and refolded.
She Googled the man’s name but didn't recognize his face.
But Carlton Cohen says he knew him and saw another side of him than his sister.
"I know that that guy [was] a killer," Cohen said. "So brutal, so cold, so malicious."
Audette says she passed the man's name along to Toronto's chief of police in October 2017 but hasn't heard back.
Gallant, the cold case investigator, said he didn’t know anything about the note. He would not say whether the man was ever a person of interest during the initial investigation.
That man's homicide has not been solved.