On this episode of InFocus: From the west coast to the Golden Horseshoe surrounding Toronto, there is evidence to suggest serial killers are hunting and disproportionately, Indigenous women and girls are their prey.

And those serial killers likely number far more than the average person imagines.

That’s according to Michael Arntfield, a Western University criminologist and serial killer expert who studies murder patterns for the Murder Accountability Project in the U.S.