Carla Lane redefined British comedy drama in the 1960s with her unique brand of 'situation tragedy'. At a time when television writing was the preserve of middle-class men, she brought a convincing cast of working-class female characters to British screens. The daring honesty with which she told the stories of ordinary women revolutionised the roles available to actresses on TV and blazed a trail for the screenwriters following in her footsteps.This special edition of Artsnight delves into the BBC's archive and brings together rarely seen interviews in which writer Carla Lane discusses her life and work, while Carla's son Carl offers personal insights into his mother's career and legacy. With contributions from the Liver Birds - Polly James and Nerys Hughes - and Geoffrey Palmer, the long-suffering husband to Ria in Butterflies.