Season Two, Episode Five: Winnie Sings!

In which Cole springs a surprise and Emily is astonished to be able to hear the voice of a woman with whom she has become obsessed: Winifred Barnes, beautiful young star of the West End stage during World War One, who gave up her career to live, as an eccentric, on the edge of the cliff at Holywell. Featuring recordings from 1917, rescued and restored by Dominic Combe as part of his Palaeophonics project.

There are some gorgeous images of Winifred on the National Portrait Gallery site here.