Fifteen years ago, an anonymous “poison pen” letter was sent to Canada’s consulate in Hong Kong claiming a man who attended a medical exam required for immigration to Canada was an imposter, pretending to be the husband of an investor-class immigrant because her real husband was in prison.

By the time the Canadian government got around to doing anything about the letter, the woman had moved to Prince Edward Island with the couple’s son, divorced her husband who remained in China, and built a successful business and new life with community ties and church friends.