On Saturday morning, May 11, 1991, six-year-old Yannick Fortin was last seen playing alone in the backyard of the family home, which overlooks the Saint-Maurice River. The family cat, who followed Yannick around wherever he went, went missing at the same time. Yannick's father, Adrien Fortin, surmised that the cat may have been drinking out of the river and Yannick may have fallen in trying to pick the cat up.

Across Canada, over 250 children under the age of 18 have been missing for more than a year. They are who become called the long-term missing — children whose disappearances have stretched beyond the first search efforts, beyond the news cycle, and far beyond what any family should ever have to endure. Learn how you can help bring them home!

The following timeline of Kenley Matheson's disappearance contains CONFIRMED facts (before investigative information gathered by the police)

In March of 2001, 11-year-old Bethany Markowski went on only her second unsupervised visit with her father, Larry, and was never seen again.

There are 7 children missing long term in Maine - the oldest case is Robert Desmond from 1964 and Ayla Reynolds went missing in 2011.

21 month old Bette-Jean Masters went missing from Red Lake, BC in 1960. It is possible she may be living somewhere without knowing her past.

Kenley Matheson went missing from Acadia University in Wolfville on September 21, 1992. His family is desperate to find him.

On April 7, 1974, ten-year-old Leigh Savoie, left his home on State Road, carrying his shoeshine kit. He has never been seen again.

When 6-year-old Howard Newell went missing from Little River Harbour, Nova Scotia, the search for the little boy made national news and...

One of the oldest missing child cases in the United States. Melvin went missing nearly four years before the Lindbergh baby.

Sofi Ma was abducted by her non-custodial father, Moses Ma. on January 7, 2014 from Toronto, Ontario, Canada.