Note: contains discussion of themes such as suicide that some readers may find upsetting. To celebrate Women's History Month and International Women's Day, we've launched Screen Sisters, a collection of conversations with women both in front of and behind the camera about what it means to be a woman working in television. As well as recognising their contribution to the industry, the series will also examine how far television has progressed, and how much further it still has to go. Next up, we're speaking to Harriet Walter. "I didn't have obvious talent," says Harriet Walter, reflecting on...