In 1941 Warrick made her Hollywood debut in "Citizen Kane" as Emily Norton Kane. Orson Welles chose her for the role of his wife because, he said, there were no "ladies in Hollywood" who fit the bill.
Warrick later appeared in other movies, including "The Corsican Brothers," with Douglas Fairbanks Jr., and "The Great Bank Robbery."
Television turned out to be her medium. Warrick had a starring role in the series "Father of the Bride" and received an Emmy nomination for her role as Hannah Cord in the long-running "Peyton Place." She also appeared in "As the World Turns," from 1956 to 1960, and "The Guiding Light," from 1953 to 1954.
"All My Children" premiered in 1970 with Warrick playing Phoebe Tyler, the grande dame of the fictitious town of Pine Valley. She portrayed the meddlesome and over-the-top personality so believably that her fans often had trouble distinguishing between the stylish actress and her fictitious, equally sophisticated, character.