"I'm hearing about the parties, hearing about a guy who's throwing money around," says Kass, president of Seabreeze Partners Management. While stories about young girls swarming Epstein's waterfront mansion and the sex parties he hosted for the rich and powerful were the talk of the town, Kass was more focused on how this obscure person, rumored to be managing billions of dollars, had become so wealthy without much of a track record.

Kass was well-connected on Wall Street, where he'd worked for decades, so he began to ask around. "I went to my institutional brokers, to their trading desks and asked if they ever traded with him. I did it a few times until the date when he was arrested," he recalls. "Not one institutional trading desk, primary or secondary, had ever traded with Epstein's firm."