Born in New York City, Essex wanted to be a writer from early boyhood. After graduating from St John's University in 1936, he did welfare work by day, while writing for the theatre by night. His play Something for Nothing was produced on Broadway in 1937. He went to Hollywood in the early 1940s, and was starting to do well in films when wartime service intervened.
After demobilisation from the US Army Signal Corps, he and Martin Rackin wrote Desperate (1947), a taut thriller directed by Anthony Mann. In Essex's screenplay for Frightened City (1950), smallpox was unknowingly carried around New York by a smuggler (Evelyn Keyes). Unfortunately, while the film was still in production, 20th Century-Fox released Panic in the Streets, in which pneumonic plague was unknowingly carried around New Orleans by a murderer (Jack Palance); consequently, Frightened City was shelved for nearly a year.
Essex co-wrote Universal's The Fat Man (1951), which starred J. Scott Smart as the obese detective Brad Runyon, a role he had played on radio since 1946. The series was developed especially for radio by Dashiell Hammett, creator of The Thin Man, but as he had just been jailed for refusing to co-operate with the House of Representatives' Committee on Un-American Activities, Hammett's name was conspicuous by its absence on the screen credits of The Fat Man. Another sign of those paranoid times was that Essex and Earl Felton received screenplay credit on The Las Vegas Story (1952), but not their co-writer Paul Jarrico, who had been blacklisted.
Essex directed four films, beginning with Mickey Spillane's I, the Jury (1953), which he also wrote. That same year, he adapted Ray Bradbury's story "The Meteor" as It Came from Outer Space, in which, unusually, the bug-eyed aliens weren't bent on world conquest, but were only on earth long enough to repair their spaceship. With the same production team, Essex co-wrote The Creature from the Black Lagoon the following year.
He wrote such westerns as Wyoming Mail (1950), Raw Edge (1956), The Lonely Man (1957), and John Wayne's The Sons of Katie Elder (1965), in which four straight-shootin' brothers avenged the family honour. Because Essex shared script credit with Talbot Jennings, Allan Weiss, and William H. Wright, one critic wondered if each Elder sibling had his own writer.
In the 1950s he wrote television scripts for Philco TV Playhouse and Playhouse 90, and in the 1960s for The Untouchables. He also wrote many plays, novels and short stories.
In 1954, when his I, the Jury, It Came from Outer Space, Devil's Canyon, The Creature from the Black Lagoon and Southwest Passage - all 3-dimensional films - were on release, a Hollywood trade paper quipped, "Harry Essex has so many 3-D pictures out, you have to wear special glasses to see him".
Harry J. Essex, screenwriter, director, playwright: born New York 29 November 1910; (one son, one daughter); died Los Angeles 6 February 1997.