I discovered shell businesses and merchant accounts. There were very few people who worked in the office, mostly just one family. They never left trash. One of my coworkers had the job of picking up mail at drop boxes in southern Utah and Nevada. They stole millions from innocent victims.
I worked with an FTC attorney for a couple of years. It all seems crazy now. There were a lot of private phone calls I had to take in my closet at home. The attorney allowed me to tell my wife what was going on, but no one else. It was weird when he'd conference me in with a group of lawyers who took turns questioning me.
Eventually, I got the call that the place had been raided by federal agents. They lost big in court. The family was financially destroyed.