The documents, related to a Panamanian law firm that specializes in creating shell companies for many of the world’s richest people, provide a glimpse into how secret fortunes and ill-gotten gains are moved through a shady financial network, according to The International Consortium of Investigative Journalism, which worked with news organizations around the world to analyze the files.

The clients and connections included current and former world leaders, famous athletes and billionaires, but also notorious underworld operatives. The ICIJ says people in the United States were involved. But hardly any are among the bold-faced names made public. One exception is Chicago-based financial coach and author Marianna Olszewski — who, according to ICIJ member the BBC, allegedly used the firm, Mossack Fonseca, to hide her name as the owner of a secret offshore account.