Complex sentence: The following year, she won the Best Actress Academy Award for Hitchcock's "Suspicion" (1941), the only actress Academy Award ever won in a film directed by Hitchcock.
Split into simpler sentences: The following year, she won the Best Actress Academy Award for Hitchcock's "Suspicion" (1941). She is the only actress to have won an Academy Award for a performance in a film directed by Hitchcock.