American executive Conrad Tucker sees a photograph in a magazine of the wealthy Aird family's youngest daughter, and begins a quest to discover if she is the result of his affair with her mother Virginia. Determined to learn the truth, he sets out to uncover the family's long-kept secrets along the way.

• Tele München
• Jonathan Aitkins
• Suzan Anbeh
• Eileen Atkins
• Michael Brandon
• Jessie Buckley
• Charles Dance