William's notes also speak of five sacred keys required to shut the portal for good, entrusted to different members of the Gordon family. In his dying breath the elder cursed the younger, stating that he and his descendants would be forever cursed until five souls were sacrificed and his evil was unleashed once more. The younger, Marcus, fought his brother, killing him and containing - but not closing - the Black Mirror. The eldest, Mordred, was a monster of a man, opening a dark portal known as the Black Mirror deep under where the manor now stands. From his grandfather's writings and other sources, Samuel discovers that centuries ago, in the 1200s, the Gordon line began with two brothers, Marcus and Mordred Gordon. Samuel's investigation soon reveals that his grandfather had interests in the arcane, and up until his death had spent nearly every waking hour working to uncover the mystery of the Gordon family's curse. Upon his arrival in Black Mirror, Samuel begins his investigation of his grandfather's death. Despite the mysterious circumstances surrounding William's death, it is considered a suicide by everyone except for Samuel. The protagonist, Samuel Gordon, is forced to return to the Black Mirror manor after 12 years absence upon hearing of the death of his grandfather, William Gordon. The story takes place on August 1981, primarily at Black Mirror, the ancestral manor of the Gordon family located in Suffolk, England.

The black mirror game