Charts from an accountant hired by the U.S. Attorney’s Office detail a web of financial irregularities at Michael Avenatti’s now-bankrupt law firm that prosecutors argue amounts to a felonious scheme to defraud four clients.

For Avenatti, discrediting the work of expert witness John Drum, a vice president at Denver-based Analysis Group, involves highlighting for the jurors the failure of federal investigators to consider financial data in a software program called Tabs, which his firm’s attorneys used to track their time and expenses. Avenatti doesn’t have the data, and he’s blamed prosecutors for withholding it from him in violation of discovery rules and case law regarding exonerating evidence.