East of Eden is a novel by John Steinbeck that explores the complex relationships between two families, the Trasks and the Hamiltons, in California's Salinas Valley. The story delves into themes of good and evil, free will, and the struggle for identity, drawing parallels to the biblical tale of Cain and Abel. Set against the backdrop of the early 20th century, the characters grapple with their moral choices and the legacies of their ancestors. Steinbeck's rich storytelling and deep character development make East of Eden a profound exploration of human nature and the eternal conflict between light and darkness.