Robert C. O'Brien was an American author best known for his children's and young adult literature. He gained significant recognition for his novel, Mrs. Frisby and the Rats of NIMH, which won the Newbery Medal in 1972. O'Brien's writing often featured themes of adventure and the importance of courage. In addition to his literary work, O'Brien was also a screenwriter and contributed to various television programs. His storytelling skills extended beyond books, as he created engaging narratives that captivated audiences of all ages. O'Brien's legacy continues to influence writers and readers alike.