In 'Until You,' a historical romance by Judith McNaught, Sheridan Bromleigh, a teacher of wealthy young ladies, travels from America to London with her student, Charise Lancaster, who is set to meet her fiancé. However, their plans are upended when Charise elopes with a stranger. In a twist of fate, Sheridan meets Stephen Westmoreland, the Earl of Langford, who confuses her for Charise. An accident leaves Sheridan with amnesia, believing she is Miss Lancaster. As she recovers in Stephen’s mansion, Sheridan falls in love, unaware of her true identity but captivated by the possibilities of her new life.