When you think about corporate secrecy, nefarious shell companies and conspiratorial tax dodging, the state of Delaware probably doesn’t come to mind. We often think of exotic places like Panama or Bermuda, but the research of University of Chicago Adjunct Professor Hal Weitzman shows how it’s all happening right here in the United States.

In his new book, What’s The Matter With Delaware?, Weitzman goes down the complex Delaware rabbit hole to discover how this tiny U.S. state became the incorporation capital of the world—uncovering everything from criminal conspiracies to wealthy tax avoidance to political dark money.