Fiction involving twins--I have seen East of Eden--read the Wally Lamb book and the novel Cutting for Stone by Abrham Verghese

Fiction novels featuring twins explore themes of identity, rivalry, uncanny connection, and secrets, with popular examples including Arundhati Roy's The God of Small Things (intense bond, tragedy), Audrey Niffenegger's Her Fearful Symmetry (mystery, ghosts), Brit Bennett's The Vanishing Half (identity, race), Rainbow Rowell's Fangirl (college, separation), and Sally Hepworth's The Good Sister (thriller, dark secrets). Other notable books include I Know This Much Is True, The Poisonwood Bible, and The Secret History, offering diverse genres from literary fiction to thrillers centered on twins. Literary & Family Sagas

The God of Small Things by Arundhati Roy: A poignant story of fraternal twins Rahel and Estha, exploring forbidden love, tragedy, and caste in India.

The Vanishing Half by Brit Bennett: Follows twin sisters who choose to live in two different worlds, one passing as white, examining race and identity.

I Know This Much Is True by Wally Lamb: Focuses on identical twin brothers, one with schizophrenia, and their complex lives.

The Poisonwood Bible by Barbara Kingsolver: Features twin sisters among missionary daughters in the Congo.

Mystery & Thriller

Her Fearful Symmetry by Audrey Niffenegger: American twins inherit a flat in London near a cemetery, uncovering dark family secrets.

The Good Sister by Sally Hepworth: A suspenseful novel about twin sisters with a dark, shared past and a plan for a baby.

Julie Chan is Dead by Liann Zhang: A thriller where a twin impersonates her successful, dead sister.

Contemporary & Coming-of-Age

Fangirl by Rainbow Rowell: Explores twin sisters growing apart as they start college, focusing on fandom and identity.

Nothing to See Here by Kevin Wilson: A humorous and strange story about a woman tasked with caring for her best friend's twin children, who spontaneously combust.

Classics & Fantasy

The Secret History by Donna Tartt: Features creepy twins within an elite college group, central to the novel's mystery. The Thirteenth Tale by Diane Setterfield: A Gothic novel where a famous author's story involves twins, secrets, and a hidden history. Other Notable Mentions

East of Eden by John Steinbeck: Features twin brothers, Caleb and Aron, embodying good vs. evil.

The Horse and His Boy by C.S. Lewis: Includes the twin horses Bree and Hwin in the Narnia series.