"Once Is Not Enough" is a novel written by Jackie Collins, published in 1973. The story follows the life of Kate Browning, a young woman navigating the complexities of love, ambition, and betrayal in the glamorous world of Hollywood. The book explores themes of desire and the pursuit of happiness, highlighting the challenges faced by women in a male-dominated society. As Kate encounters various relationships and struggles with her identity, the narrative delves into the darker side of fame and fortune, making it a compelling read for fans of romantic drama.