This week André Langlois speaks to journalist and documentary maker Andrew Gold.  

Andrew was a Highgate resident until a few years ago when he upped sticks to Buenos Aires, in Argentina, and began looking into the work of Padre Manuel Acuña - an investigation which led to the BBC documentary Exorcism: The Battle For Young Minds. 

He also has a podcast series out called On the Edge with Andrew Gold, where he chats outsiders, intellectual heavyweights and people whose stories are just plain unusual.