“In 2005, I went to a photography exhibition with my DOP (director of photography) and friend, Alex Catalán, and we discovered Atín Aya’s photos about life in the marshland. People and places stuck in time. That gave us a place to set our next film but we needed a strong enough plot. In 2012, after seeing various documentaries about the transition to democracy in Spain, we decided that was the period we wanted to situate the film in.”