Katharine Hepburn acts.
Katharine Hepburn . Hepburn challenged herself in the latter half of her life , as she regularly appeared in Shakespearean stage productions and tackled a range of literary roles . 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 .