[5][6] The story takes place in August 1981, primarily at Black Mirror, the ancestral manor of the Gordon family located in Suffolk, England.

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.

William's notes also speak of five sacred keys required to shut the portal for good, entrusted to different members of the Gordon family.

At long last Samuel obtains the five keys, but moments later also discovers the horrifying truth: he is the killer responsible for all the deaths, ending the lives of the victims in his sleep; this is the nature of the Gordon family curse.

After this, unable to live with the atrocities he has committed, Samuel jumps from the top of the mansion, falling onto the same spiked fence which killed his grandfather.

[7] A few weeks after The Black Mirror's initial release in the Czech Republic, Marcel Speta of Future Games reported that it was selling adequately and according to company forecasts.

[11] It claimed position #1 on Amazon.de's sales rankings upon release, although Carsten Fichtelmann of German publisher DTP Entertainment noted that certain brick and mortar stores had ordered "very small" shipments, a decision he considered to be a mistake.

[15] That September, DTP reiterated that it was performing "extremely well in the German-speaking territories", and that strong sales persisted "many months after" its initial launch.

[17] The Black Mirror maintained its status as Germany's top-selling adventure of 2004 through the end of the year;[13][14] Chris Kellner of DTP believed that the game's German sales surpassed its commercial performance anywhere else.

[13] Alongside Sherlock Holmes: The Case of the Silver Earring and The Moment of Silence, The Black Mirror contributed to DTP's large-scale growth during 2004.

When Joshua hears news of the dark events in Edinburgh, he doesn't hesitate for a moment and sets out to verify what he has been learning and hiding for so long about the curse of his family.