大象传媒

In August 2007, on an island off the west coast of Canada, the remains of a human foot were found washed up on a beach.

Six days later, on another beach fifty miles away, a second foot was found but, strangely, it doesn't match the first - they're from different people.

The 大象传媒鈥檚 Celia Hatton travels to Vancouver to hear how more than twenty further feet have been found in the area since then, and to speak to the investigators and scientists who鈥檝e worked to uncover the mystery of why they started appearing.