Out of print
This book, first published in 1978, maintains that there is a clear answer to its eponymous question, perennially voiced by English-speaking Canadians.
In 1964, Canadian diplomat John Watkins died of a attack while being interrogated by the RCMP as a suspected Soviet spy. The RCMP could find no evidence to confirm their suspicions, yet Watkins' death was hushed up for nearly 20 years.