James Farrell Marrs Jr. (December 5, 1943 – August 2, 2017) was an American newspaper journalist and New York Times best-selling author of books and articles on a wide range of alleged cover-ups and conspiracies. Marrs was a prominent figure in the JFK assassination conspiracy theories community and his 1989 book Crossfire was a source for Oliver Stone's 1991 film JFK. He wrote books asserting the existence of government conspiracies regarding aliens, 9/11, telepathy, and secret societies. He began his career as a news reporter in the Dallas–Fort Worth–Arlington metroplex and taught a class on the assassination of John F. Kennedy at University of Texas at Arlington for 30 years. Marrs was a member of the Scholars for 9/11 Truth.

Source: Wikipedia