In 1597, King James VI of Scotland published a compendium on witchcraft called Daemonologie that laid down the kind of trial and punishment these practices merited.  But why was there a witch craze in Europe?  How were witch hunts triggered?  Who were the victims?  And why did witch trials spread to America?  Rob Weinberg asks the big questions on this dark but fascinating period to Professor Miri Rubin of Queen Mary University of London.