Canada has its fair share of serial killers which was very eye opening for me. Other countries that have produced quite a few serial killers are UK (the 2nd most), Australia, South Africa, Mexico, Russia, Germany, France, Japan, and Spain.
Actually, Australia used to be the land of the criminals so it's understood (the serial killing) but they have come such a long way since then and now they are such a glorious nation. That's always very nice to see. And Germany has done a very decent job since the 2nd WW so that's another nice thing to see.