Months after two passenger planes flew into the World Trade Center and another crashed into the Pentagon on 9/11, Huda Mukbil joined Canada’s spy agency as an intelligence officer. Months after a white supremacist gunned down six Quebecers praying in a Quebec City mosque in 2017, Mukbil turned whistleblower. Those 15 intervening years are captured in a recently released book that tells the story of how Canada’s first Black Arab-Canadian Muslim spy was treated at the Canadian Security Intelligence Service. It depicts an agency dragging its heels on recognizing the relevance of diverse staff and describes how biases including misogyny,...