Born and raised in Indiana, Thomas Geraghty left for New York after graduating school and got a job as a reporter for the New York Herald and later the New York Tribune. His entrance into the film business was as a publicist, and he later became a writer for the one-reel comedies of Sidney Drew. In Los Angeles he got a job as a writer for Douglas Fairbanks, and was sent to New York by Famous Players-Lasky when it opened a studio there. He ran the studio for several years, then was sent to London to run the studio there, before returning to the US in 1922. He turned out screenplays for various studios throughout the 1920s and 1930s, including the highly regarded Wings of the Morning (1937).