Insidious: Chapter 3 is a 2015 American supernatural horror film written and directed by Leigh Whannell in his directorial debut.

It is a prequel to the first two films and the third installment in theInsidious film series.

The film stars Dermot Mulroney and Stefanie Scott, with Angus Sampson, Whannell, and Lin Shaye reprising their roles from the previous films.