He worked for United Press International as a sports reporter from 1940–1965 but still managed to write during his free time. Over the course of his lifetime, Fraley penned 31 books, including Hoffa, The Real Story (Stein and Day, 1975). In 1956 he was introduced to Ness while working as a reporter for UPI. It was this encounter that served as the inspiration for The Untouchables. By 1957, Fraley had written most of the proofs for the manuscript of the book. Ness read these proofs shortly before his own death that same year.
The Untouchables went on to sell 1.5 million copies and served as the basis for the television series and movie of the same name.