As Above, So Below

“The only way out is down.”

A secret lies in the catacombs under Paris, and Scarlett (Perdita Weeks), a young explorer, believes she knows where. She leads George (Ben Feldman) and a small team into the tunnels in search of the philosopher's stone, with a camera filming every step. John Erick Dowdle sends them past the tourist routes into the city of the dead, and the only way back is the same dark tunnels.