The Cop Who Created a Killer

Quiet Canines Podcast · Aug 13, 2026 · 2m

At 10:40 on the night of June 4, 1971, police arrested Donald Marshall Junior in Whycocomagh. The case against him had been built by John MacIntyre, the Sergeant of Detectives with Sydney City Police.

MacIntyre already regarded Donald as a troublemaker. By the morning after Sandy Seale was stabbed, MacIntyre had decided Donald was responsible. He told an RCMP sergeant that Donald and Sandy had been arguing, which was a lie.

George and Alexander MacNeil had also seen two unfamiliar men in the park. Their descriptions matched Donald’s account. MacIntyre set their evidence aside, stopped looking…