In this 3rd episode in the series, Paul and Dan go off on a tangent to think about demons.  They start by looking at where they appear in the Old Testament and find them linked to the idols worshipped by the peoples around the ancient Israelites and presented as having no real existence or power.  When they come to the Gospels they explore why they suddenly appear so often there and why they are linked with certain types of illness.  They conclude with the overriding point that God is the only source of power and so Christians have no need to fear them and can safely ignore them while embracing the love of God expressed through his Son.