On the rebound from an unhappy relationship, Maggie marries Alex Stewart, a rich banker. Their marriage survives only because he spends most of his time away from the UK on business, latterly in Sydney, Australia. Problems that surface in their marriage when Alex sends their two sons to boarding school deepen when both sons leave to work in Sydney after university. Unexpectedly, Alex retires and returns to live permanently with Maggie after being diagnosed with leukaemia. Shortly before his death, having suspicions about the contents of a cassette tape which he asks her to take to his...