Benedict Orr, a desperate artist ahead of his time, sets aside his dream of becoming a painter for the latest invention from Paris: the daguerreotype camera. Bringing the secret of photography to Scotland, Ben partners with Ethel Playfair, a young woman of science, and together they discover a macabre form of art when they produce the world’s first post-mortem photograph.

Money, fame and romance follow, but the events take a dramatic turn. Ben is haunted by the dead, the souls of his photography subjects. As Ben slowly unravels, Ethel attempts to pull him out of the darkroom and expose the truth behind the mounting terror, a devastating secret buried within the frames of haunting photographs. Memento Mori explores the birth of photography and how it changed one man, and the world, forever.