Bruce McArthur worked as a travelling sock and underwear salesman across Eastern and Northern Ontario from 1978 to approximately 1993. His confirmed murders — all in Toronto — used ligature strangulation and occurred between 2010 and 2017. His victims in confirmed cases were South Asian and Middle Eastern men connected to Toronto's LGBTQ community. The Napanee John Doe is a South Asian man found bound and gagged on a rural Ontario road in October 1989 — during McArthur's sock-selling years. The OPP says they are 'pursuing the possibility' that this man was a McArthur victim. A criminologist argues that this framing is backwards — that the question is not whether McArthur killed in 1989 but whether investigators have adequately considered alternatives. Identify the single most important alternative investigative direction that would be obscured if all resources are focused on the McArthur connection.