Billie Giroux last saw her son 17 years ago. "I always remember him in a red and blue jacket saying, 'I'll see you on Sunday, Mom'," she says of her 14- year-old son Tyler.
He vanished over the Easter weekend in 1983. Despite a large police search, the Whitehorse teenager was never found.
Giroux says she knows in her heart Tyler is dead. She says she had a dream where her son appeared and told her he had died.
Giroux believes he's in heaven but she says it's still painful for her to think about what his last hours were like.
"I think my only sadness is I sometimes wondered if he suffered when he died, and I think he did," she says.
RCMP sergeant Larry Kavanagh works on missing person cases. He says there are some very strange cases in the Yukon such as a three-year-old boy who disappeared while walking home from his grandmother's house in the 1970s.
And there was a case last year where a 25-year-old man was last seen running into the bush without a shirt. It's suspected he was high on mushrooms.
Kavanagh says police always assume foul play could be a factor in the unsolved cases. But he says people also die accidentally or they choose to flee from former lives and take on new identities.
He says some cases are just never solved and friends and family are just left wondering if the person is dead or alive.