The world of The Conjuring is a big and spooky one, with a series of horror movies that are connected in some way or another. Some introduce us to the creepy doll Annabelle, moving from house to house ...

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You'd think it would be enough for filmmaker James Wan to have two hugely successful horror franchises under his belt with Saw and Insidious (both co-created with writing partner Leigh Whannell). But ...