As above so below
Its a film from 2014...
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Scarlett Marlowe, a young alchemy scholar, continues her dead father's work searching for the philosopher's stone, a legendary alchemical substance said to be capable of turning base metals such as lead into gold or silver and grant eternal life, discovered by Nicolas Flamel. After finding the "Rose Key" in a cave in Iran which she narrowly escapes as it collapses, due to Muslim extremists blowing up the ancient site. she travels to Paris, where she then enlists the help of George, her former lover. Along with Benji the cameraman, they translate Flamel's headstone, which contains a riddle that leads them 370 feet underneath the streets of Paris. She enlists the help of a guide called Papillon, his girlfriend Souxie, and friend Zed to search the Catacombs of Paris. George refuses to go but is driven into the caves with the group when a policeman spots them. After crawling through a narrow tunnel which collapses, they encounter female cultists who are singing and appear possessed. They find themselves in a blocked tunnel that Papillion is reluctant to breach, as the only people who have gone through, including Pap's friend La Taupe (The Mole), have never been seen again.
After venturing deeper into the catacombs, they encounter La Taupe, who agrees to guide them out and informs them the only way out is down. They eventually find a tomb with a preserved Templar Knight, a mound of treasure, and the Flamel Stone. Removing the stone, Scarlett realizes too late that the treasure is a trap, and the room collapses. La Taupe is lost under the rubble and is left behind by the group.
With the Flamel Stone (the philospher's stone) Scarlett magically heals the group's injuries. They find a drawing of a door on the ceiling along with a Gnostic Star of David, symbolizing "As above, so below", revealing a door hidden in the floor. Going through the opening, they find a tunnel marked with the phrase "Abandon all hope, ye who enter here" in Greek, identical to the entrance to Hell in Dante's Inferno.
Passing through, they find a dark reflection of the room they left, including La Taupe, who attacks and kills Souxie, before disappearing in the narrow tunnels. They realize they must continue and go deeper to escape. Along the way, Benji the cameraman is pushed to his death down a hole by the lead female cultist, who caught his eye in Paris and while singing in the catacombs. They encounter a burning car and an occupant, an incident from Pap's past who pulls in Papillon and sinks into the floor. They fail to pull Pap out of the ground. As they continue, they see apparitions of terrifying spirits and demons. Statues in the wall come to life, and one violently attacks George. After trying to drag him further, George murmurs, "Vitriol", another riddle from earlier (an alchemical term) and Scarlett realizes the Flamel stone itself is yet another trap. Only by returning it will she find the real stone.
As she races back to the crypt, she comes across a room where a man hanged himself, who she tearfully realizes is her dead father. After nearly being dragged down and drowned in a line of blood by an unseen force, she returns to the crypt and finds a polished mirror, which is when she realizes she has the magical abilities of the stone. She returns to George, kissing him as she holds his wounds, healing them. She explains they must confront their torments, as this place provides an alternate form of reality, such as George's brother who drowned when he failed to get help for him, her father who called her to tell her he was committing suicide, but refused to answer his call, and a child which Zed refuses to acknowledge, who plagued him multiple times along the journey. As the hooded demons chase them, they find and jump down a deep hole. They first believe there is no logical way of surviving the fall but survive. At the bottom, they see the hole is no longer there. Eventually, Scarlett, George, and Zed find a manhole on the floor, which when pushed down delivers them right side up onto the surface, on a street overlooking the Notre Dame. Scarlett and George hold each other while Zed walks away, finally safe. In an ending log, Scarlett concludes her documentary by stating that her mission has been accomplished. The film's references to Alchemical lore and esoteric occultism are all fairly accurate & clearly the writer or director did their research.