We've always known that Jess might not be quite right, and Philippa suspects that she might finally understand why. Join the demonic duo as they weigh up the pros and cons of  possession, as well as two common modern explanations for this phenomenon.Sources:Almond, P. (2004) Demonic Possession and Exorcism in Early Modern England: Contemporary Texts and their Cultural Contexts. Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo: Cambridge University Press.Levack, B. (2013) The Devil Within: Possession and Exorcism in the Christian West. New Haven, London: Yale University Press.Young, F. (2016) A History of Exorcism in Catholic Christianity.Cambridge: Palgrave MacMillan.