As Halloween fast approaches, Matthew Sweet is joined round the Free Thinking cauldron by guests including Marina Warner and Suzannah Lipscomb to consider the season of the witch. Film critic Larushka Ivan-zadeh and Claire Nally from Northumbria University review new blockbuster The Last Witch Hunter starring Vin Diesel, and consider the depictions of witches on film ahead of a screening of Vincent Price's 1968 horror classic Witchfinder General. Catherine Spooner of Lancaster University and historian Suzzanah Lipscomb offer an historical guide to the famous witch trials from Pendle to Salem. And author Marina Warner discusses her father's relationship with the ghost writer M.R. James.