The complete three-part BBC drama set amidst the lesbian subculture of 1890s England. The series follows heroine Nan Astley (Rachael Stirling), who meets and falls for male impersonator Kitty Butler (Keeley Hawes). Nan moves to London and begins an affair with Kitty while also joining her music hall act. When she discovers an unwelcome truth Nan begins a voyage into the capital's sexual underworld which eventually sees her become destitute and forced to make some important decisions about the future of her relationships.