Question: Which air transport operations hub was commanded by the most recent serial killer profiled in the book Cold North Killers: Canadian Serial Murder?
Sentence (from "Cold North Killers: Canadian Serial Murder"): The book uses Katherine Ramsland's interpretation of what constitutes a serial killer—someone who has killed at least two people on two separate occasions, and who attempted to or likely would have killed again—as outlined in her 2007 book "The Human Predator".
Relevant evidence: No