Disappearance of Christina Calayca

Christina Calayca was born 19 December 1986 to Elizabeth Rutledge and Mario Calayca, who divorced when she was one year old. Raised in Toronto's Cabbagetown neighbourhood, she was a devout Catholic active in the youth ministry Youth for Christ and had recently earned a certificate in Early Childhood Education from George Brown College. In the summer of 2007 she worked at a day-care summer camp and planned to attend teachers' college. Family members described her as hard-working but noted she had poor spatial awareness, a weak sense of direction, and a foot injury that made prolonged walking or running painful.

Over the August 2007 Civic Holiday long weekend, Calayca and three friends — Faith Castulo, Edward "Eddy" Migue, and Joe "J.B." Benedict — drove from Toronto to camp at Rainbow Falls Provincial Park, a rugged area on Highway 17 between Schreiber and Rossport, Ontario. None of the group were experienced campers. After a night of socializing around a campfire, Calayca and Migue set out together before dawn on Monday, 6 August, intending to jog after visiting the comfort station. The two split up near the park entrance, with Migue heading toward Highway 17 and Calayca taking a path toward Rainbow Falls itself. This was the last confirmed sighting of her. A Schreiber resident later told police he may have seen an Asian woman running through the nearby Rossport campground around 09:00 that morning, though this was never confirmed as Calayca.

When Calayca failed to return, her friends searched on their own before reporting her missing to park staff and the Ontario Provincial Police around 14:00. The OPP led a 17-day search involving roughly 100 personnel, canine units, aircraft, thermal imaging, and underwater sonar searches of nearby waters, covering an 8-kilometre radius based on standard lost-hiker search protocols. Items including a pair of socks, a footprint, and a candy wrapper were recovered but none were conclusively linked to Calayca. The official search was called off on 23 August 2007.

Calayca's mother, Elizabeth Rutledge, subsequently organized and financed three additional privately funded searches between 2007 and 2009, involving cadaver dogs and volunteer search-and-rescue teams from Canada and the United States. In November 2008, cadaver dogs reportedly indicated the possible presence of human remains in the Hewitson River, but the site could not be further investigated due to water depth and current, and a follow-up OPP search in 2009 found no new evidence. Human remains found near Thunder Bay in October 2010 were investigated as possibly belonging to Calayca but were determined unrelated.

Investigators have publicly stated they do not suspect foul play, favoring theories that Calayca became lost and disoriented in dense forest, though a bear attack was also considered and later deemed unlikely by an outside bear-attack expert. Calayca's family has maintained that she was likely abducted or the victim of violence. As of 2022, her case remains open with the OPP's Nipigon division, and the Ontario government has offered a $50,000 reward for information leading to her whereabouts.