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Everybody knows about the catacombs that lay dormant below Paris, right? They’re a long series of underground tunnels beneath Paris where the remains of about six million people were discarded into that, for whatever reason, are open for tourists to come view as one of the official 14 City of Paris Museums. This already sounds like a horror film in the making, no?

In As Above, So Below, three Americans decide to explore deeper into the catacombs for… well, I don’t know what. Adventure? Shenanigans? GoPro footage? Whatever the case may be, as they descend deeper into the catacombs, they begin to individually face their own demons from their past, manifested into very real, very physical apparitions. Perdita Weeks, Ben Feldman (Mad Men), and Edwin Hodge (The Purge: Anarchy) star as the three adventurous explorers.

As Above, So Below will be hitting theaters this Friday, August 29th. You can read the film’s official synopsis below.

Miles of twisting catacombs lie beneath the streets of Paris, the eternal home to countless souls. When a team of explorers venture into the uncharted maze of bones, they uncover the dark secret that lies with this city of the dead. A journey into madness and terror.