Adventure Company: The Black Mirror: Publisher's official page, with links to demonstration download and many reviews.
GameFAQs: The Black Mirror: Walkthrough and puzzle solutions.
JAVE: The Black Mirror: Comparison of the North American and Czech Republic version of the game. Screenshots, short reviews, and links.
Low-Spoiler Guide to The Black Mirror: Review, hints, walkthrough, and list of possible deaths.
MobyGames: The Black Mirror: Summary, credits, release information, screenshots, reviews, and technical specifications.
The Black Mirror: Official site with description, screen shots, music preview, and game demonstration.
UHS: The Black Mirror: Reveals solutions one hint at a time so as not to spoil too much of the game.