Redpath, Olcott, Richardson and Thomson all went South for the New York Tribune and produced reporting undercover in the run-up to the Civil War.
Reporter efforts to get inside the world of lobbyists, both on Capitol Hill and in the statehouses.
An undercover investigation by the Financial Times of behavior toward hostesses at The Presidents Club's annual men-only charity event in London and reaction to the story.
Reporters have presented as teachers or students to get an inside view of what goes on in schools and colleges.
Journalists who infiltrated U.S.-based Nazi bunds, the Ku Klux Klan, the Gomorrah, and other secret societies and closed groups.
These are examples of undercover reportage that were considered to have crossed ethical lines or that caused major legal wrangles.
Reporters encounter or inhabit the lives of very hard-laboring others.
Medicare and Medicaid fraud have been perennial reporting topics since the 1960s, often requiring undercover techniques to amass specific details.
