What's the deal with horror films?

It, Annabelle: Creation

BODY: Killer clowns and haunted dolls are big news at the box office with the release of It and Annabelle: Creation.

But why do so many people pay to get the crap scared out of them? 

Associate professor of popular media and cultural history Lorna Piatti-Farnell spoke to Duncan Garner. 

Watch the video for the full interview.