He wrote several films during the pre-Code era and Hollywood golden age, including Mandalay (1934), Grand Finale (1936), The Last Train from Madrid (1937), Safari (1940), A Gentleman at Heart (1942), and The Stars Are Singing (1953).
Fox's paternal great-grandmother, Jane, immigrated to the United States from her native Nova Scotia, Canada.
[6] Paula was largely raised by relatives and friends in the United States and Cuba, until around age seven, when she briefly lived with Paul and Elsie in Los Angeles, where the couple had relocated to pursue screenwriting in Hollywood.
[9] Fox's play Soldiers and Women, which was staged on Broadway and ran for just under one year, led to him receiving a screenwriting job offer in California.
[5] He accepted the position, and relocated with wife Elsie to Los Angeles, where he quickly developed a drinking problem.
[15] In reviewing The Antagonists, critic E. E. Hollis of The Salt Lake Tribune noted Fox as a "distinctive talent" and praised the work.
[4] By this time, Fox had become disillusioned by his writing career in Hollywood, and left Los Angeles to return to the east coast.