“Oculus” is now scaring audiences in theaters and never before have audiences been this scared of a mirror. Confused as to what is so scary about something as seemingly harmless as a mirror? Check out the trailer for the film below. Also, learn more about the film from this cool interview with Karen Gillan.

“Oculus” is directed by Mike Flanagan and written by Flanagan and Jeff Howard, based on the short screenplay by Mike Flanagan and Jeff Seidman. Apart from Gillan, best known for her work in “Doctor Who,” the film stars Brenton Thwaites, Rory Cochrane and Katee Sackhoff (from “Battlestar Galactica” fame). Here’s more about “Oculus.”

“Ten years ago, tragedy struck the Russell family, leaving the lives of teenage siblings Tim and Kaylie forever changed when Tim was convicted of the brutal murder of their parents. Now in his 20s, Tim is newly released from protective custody and only wants to move on with his life; but Kaylie, still haunted by that fateful night, is convinced her parents’ deaths were caused by something else altogether: a malevolent supernatural force—unleashed through the Lasser Glass, an antique mirror in their childhood home. Determined to prove Tim’s innocence, Kaylie tracks down the mirror, only to learn similar deaths have befallen previous owners over the past century. With the mysterious entity now back in their hands, Tim and Kaylie soon find their hold on reality shattered by terrifying hallucinations, and realize, too late, that their childhood nightmare is beginning again…”