Why are severed feet washing up in Pacific North-west?

Since 2007, 16 detached human feet, all clad in running shoes, have been found on the shores of British Columbia and Washington State, including two grisly findings in the past month. The mystery has prompted many to speculate wildly on their origins - from natural disasters like the 2004 tsunami, to organised criminals using the coast as a dumping ground, or maybe a serial killer with foot fetish. To set us straight, and provide an answer to the mystery, we spoke to Barbara McLintock from British Columbia's Coroner's Office.

(Photo: The coastline of the Pacific North-west. Credit: BBC)