Serial killers from Canada are always interesting for me. Thanks for creating a thread about Fyfe, I never heard of him, and I will sure take a look at his crimes.
Another serial killer whom I find interesting is Gilbert Paul Jordan, who committed murders dubbed as the "alcohol murders" in Vancouver, British Columbia. I think you already know how he murdered his victims, but I thought it would be worth to mention to those who didn't; he would find a victim in a bar, buy them drinks or pay them for sex and encourage them to drink with him and when they passed out, he would pour liquor down their throats, causing alcohol poisoning. I think this helped him elude capture for some time.
Regards