East of Eden is a novel that John Steinbeck considered to be his magnum opus. The story is set in the rich farmland of California's Salinas Valley and follows the intertwined destinies of two families—the Trasks and the Hamiltons. Steinbeck explores themes such as the mystery of identity, the inexplicability of love, and the consequences of love's absence.

The narrative spans generations and begins with Adam Trask, who moved to California from the East to farm and raise a family on the new, rich land. However, the birth of his twin sons, Cal and Aaron, leads to his wife's descent into madness, leaving Adam to raise the boys alone. As the brothers grow, one is nurtured by the love of those around him while the other is shrouded in a mysterious darkness, embodying the biblical allegory of Cain and Abel.

East of Eden delves into the characters' most enduring themes, drawing parallels to the Book of Genesis and presenting a powerful, ambitious narrative that is both a family saga and a modern retelling of ancient stories. The novel's characters are some of Steinbeck's most mesmerizing, and the story is a captivating tale of human emotion and conflict.