Beatrice and Alexander — Valerie Mendes

When Beatrice married Victor Davenport she intended to have his children. He's a wealthy banker, used to getting his own way. Neither of them bargained for one summer's evening and its unexpected guest. Set in London, New York and Oxfordshire in 1911, this new novel explores a British marriage under threat, a family wrecked by infidelity and scandal - and an explosion of forbidden love.