The Whistleblower who captured the nation — and the man who unmasked her as a fraud

Kathy Jackson was once heralded as a revolutionary who shone a bright spotlight on union corruption but she too was later found to be a fraudster who had misappropriated hundreds of thousands of dollars in union members' money. So who was the man responsible for blowing the whistle on her? 

Reporter Annika Blau investigates.