Sarah* knew her fiancé was a racist. But she was just 17 and madly in love, so she tried to ignore it.

In the early 1990s, white supremacist groups like the Heritage Front and the Aryan Nation were active across Canada. Sarah watched, heartbroken as her boyfriend Nick was drawn deeper into the Ottawa branches of the alt-right.

One day, a neo-Nazi gang leader phoned for Nick -- Sarah, annoyed, hung up on the man. In retaliation for that discourtesy, he came to their apartment with four of his thugs. They beat her so badly, the logos on their boot soles were imprinted on her face and chest.

Twenty-four years later, the 41-year-old single mother is sharing her story for the first time. She risked her life to help disband hate groups, but they seem to have made a resurgence. With white supremacist recruitment posters appearing again across the country, she hopes her experience will inspire Canadians to fight back.

After her assault, the police officer handling Sarah's case invited her to a meeting. A CSIS agent was there. Would she be willing to go undercover, inside a hate group, using her fiancé's connections to get information?

There would be no pay. No police protection. Still, Sarah volunteered.