Alayne Fleischmann witnessed “one of the biggest cases of white-collar crime in American history,” reports Rolling Stone.

Fleischmann (who was born in B.C.) is a securities lawyer, and was a deal manager at JPMorgan Chase from 2006 to 2008. During her tenure, Rolling Stone reports, she tried to stop alleged fraud from occurring at the bank.

She’s kept quiet until now due to a confidentiality agreement, she told Rolling Stone in a recent interview. And when she expected to testify against the bank, Rolling Stone says regulators “appeared to be using her, and her evidence, as a bargaining chip to extract more hush money from [JPMorgan Chase CEO Jamie] Dimon. It worked.” In November 2013, JPMorgan Chase settled with the U.S. Justice Department for $9 billion.

To read more from Fleischmann and about the case against JPMorgan Chase, click here.

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