The IRS may be one of the most hated departments in the federal government, but it turns out it does more than just collect taxes. Pulitzer-Prize-winning author Geraldine Brooks got to know the folks in charge of the IRS’s cybercrime unit which investigates criminals who use cryptocurrency. In this bonus episode, Brooks talks with Michael Lewis about what she learned.

Read Geraldine Brooks’s full article here: Meet the black-belt, tattooed IRS official who saved 23 children from their abusers

And check out the rest of the “Who is Government” series.

The Canary, by Michael Lewis

The Sentinel, by Casey Cep

The Searchers, by Dave Eggers

The Number, by John Lanchester

How a cyber sleuth in the IRS takes down terrorists