The Leonard Lopate Show Published by The Leonard Lopate Show Informants and the FBI Listen 25 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/126786/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend New Yorker contributor Evan Ratliff tells about the role of confidential informants in the FBI. His article “The Mark” is in the May 2 issue of the New Yorker.