As a child growing up in suburban Houston, Kastle always knew a big, dark cloud hung over her family. But her father, Ben, never talked about his past. He was busy building a business, raising his children and trying to be a like every other normal family. As Kastle went through a rebellious phase of punk rock, shaved her head into a Mohawk and later moved to Los Angeles to pursue a career in journalism, she unknowingly touched a nerve of her father’s deepest fears of persecution and separation anxiety. It wasn’t until she reached her 30s that she began to turn her investigative skills on herself and her father to uncover what happened to him during his childhood in the dark days of Berlin and the Holocaust. BERLIN CALLING follows Kastle on a journey of discovery, through five cities – Berlin, Prague, Paris, Los Angeles and Houston. We see Kastle open the paperwork the Nazis kept on her family and hear her father’s firsthand account of being a child under Hitler’s oppression of the Je