Who was the star of Horizon Pictures first production?
Horizon Pictures:  The company's first production was the Academy Award-winning "The African Queen", starring Humphrey Bogart and Katharine Hepburn, in 1951. The African Queen (film):  The film stars Humphrey Bogart (who won the Academy Award for Best Actor – his only Oscar), and Katharine Hepburn with Robert Morley, Peter Bull, Walter Gotell, Richard Marner and Theodore Bikel.
Humphrey Bogart