‘Insidious: Out of the Further’ Review: Latest Entry in the Franchise Serves Up Genuinely Terrifying Setpieces Despite a Convoluted Final Act

If you’ve always been terrified of dental work and the idea of someone poking around your pearly whites with sharp tools, you’re not alone. With “Insidious: Out of the Further,” the sixth entry in the infinitely inventive horror franchise, writer-director Jacob Chase is unashamed to declare that he shares your fears, while having some gross-out…