Considered the most beautiful debutante of the 1930s, heiress Margaret Sweeny (Claire Foy) is in the midst of a divorce when she meets the dashing - and married - Ian Campbell, future Duke of Argyll (Paul Bettany).
Where to Watch Episode 1
Cast of Episode 1
Claire FoyMargaret Campbell
Paul BettanyIan Campbell
Julia DavisMaureen Guinness
Richard McCabeGeorge Whigham
Amanda DrewYvonne MacPherson
Richard GouldingCharles Jauncey
Mitchell RobertsonLennox
Sophia MylesLouise 'Oui Oui' Campbell
Donald GallagherMalcolm Kerr
Camilla RutherfordDiana Napier
Sophie WardJanet Kidd
Daniel BurtIan Campbell Jr.
David HargreavesNiall Campbell
Matt RippyCharles Sweeny
Freddie LundFreddie
Phoebe NichollsHelen Whigham
Phoebe FarnhamFrances Sweeny
Matthew StaggBrian Sweeny
Lawrence OswaldColin Campbell
Olwen MayDora
Albertine Kotting McMillanJeanne Campbell
Anne SewitskyDirector
Sarah PhelpsWriter
Chris BallantyneProducer
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