I would say that, when a Canadian appears to be in distress abroad, either because of human rights abuse or wrongful detention, nothing else really matters.
I suggest that this could happen in almost any country outside of.... It's easier to tell you what countries are probably okay than tell you what countries are a problem, because most countries are a problem. Once you get outside of Canada, the United States, Great Britain, the U.K., parts of western Europe, and Australia, it could happen any time, anywhere, in any jurisdiction.
I had a case recently in Barbados, which Canada has a tax treaty with, involving a Canadian businessman. It was a very serious wrongful detention case. I know of another case that I was brought into after the fact, which involved one of the Caribbean islands where somebody was having a wedding party and got into all sorts of wrongful detention scenarios; so it can happen anywhere because almost all these other countries have very weak rule of law or no rule of law.