Edward Carnby (Slater) is a detective who specializes in the occult and other paranormal subjects. He was apparently the subject of strange experiments when he was a child, leaving him with heightened abilities as well as a "sixth sense" that allows him to sense the paranormal. Throughout the film, we also learn that Carnby used to work for Bureau 713, a secret government organization that seeks to protect the world from paranormal dangers.
In his spare time, Carnby investigates the disappearance of the Abkani, an ancient Mayan-like civilization that worshipped demonic creatures from another dimension. Central to the plot are several artifacts un-earthed in 1967 and now on display at the city's Museum of Natural History, at which Carnby's girlfriend Aline (Reid) is the assistant curator. Carnby soon finds himself investigating the very scientist who conducted experiments on him as a child, while working with Aline and former protégé (now rival) Commander Burke, his replacement at Bureau 713, to stop an invasion of the Alien-like demonic creatures who are pouring through a portal opened by the Abkani artifacts.
Blair Erickson came up with the first drafts of the script for Alone in the Dark. According to Erickson, Uwe Boll changed the script to be more action packed than a thriller. Erickson stated his disgust and his working relationship towards Boll on Somethingawful.com.
The original script took the Alone In the Dark premise and depicted it as if it were actually based on a true story of a private investigator in the northeastern U.S. whose missing persons cases begin to uncover a disturbing paranormal secret. It was told through the eyes of a writer following Edward Carnby and his co-worker for a novel, and depicted them as real-life blue-collar folks who never expected to find hideous beings waiting for them in the dark. We tried to stick close to the H. P. Lovecraft style and the low-tech nature of the original game, always keeping the horror in the shadows so you never saw what was coming for them.