Belgravia, 1871. When Lord Frederick Trenchard meets Clara Dunn, their courtship is full of passion. But after they marry, the scandalous world of high society and a long-buried family secret threaten to unravel their happiness.

Harriet Slater, Benjamin Wainwright, Edward Bluemel, Elaine Cassidy, Claude Perron, Sophie Thompson, David Fynn, Liam Garrigan, Gerard Horan, Miles Jupp, Lauren McQueen, Hannah Onslow, Toby Regbo, Sophie Winkleman