Since Insidious: The Red Door has just been released, viewers can really understand where the Insidious movies ranked stand. While he doesn't devote himself to the horror genre like he used to, in the decade director James Wan spent making a name for himself in Hollywood, he gifted audiences with three extremely popular horror franchises. The first was Saw in 2004, which is now nine movies in. The last was The Conjuring, which has used spinoffs to become a cinematic universe unto itself. And sandwiched between the two of them is the hugely successful Insidious series, which has grossed over $550 million since 2010.