The Constant Heart — Patricia Robins

Tamily has won the love of handsome and amusing Dick Allenton, her childhood companion and heir to the Allenton estates. But her marriage to the charming but irresponsible Dick is rocked by his love affair with the sophisticated American Carol Holmer and Tamily's own growing affection for the Allenton bailiff, Adam Bond. When tragedy intervenes, Dick begins to realise where his heart really lies. But he does not anticipate the outcome of his fierce emotional entanglement with the determined Carol.