A brand-new clip from Insidious: Chapter 2 has just been released—and you better not watch it with the lights out.

This sequel to the 2010 chill-inducing scary movie Insidious picks up right where the first film left us: absolutely freakin' terrified.

It follows the very haunted Lambert family while they try to unearth a mysterious childhood secret responsible for the connection they have with the ghostly world ... spooky.

Have a look at the first scary new clip below (and a peek at the brand-new poster above):

Directed by Saw's James Wan, Insidious: Chapter 2 stars returning cast members Patrick Wilson, Rose Byrne, Lin Shaye, Barbara Hershey and Ty Simpkins.

The scary flick will—fittingly enough—open in theaters on Friday the 13th of September.

(via IGN)