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Black Mirror III Hints
How can I find the secret entrance?
1 of 8: Right after she hung up the phone, she mentioned that secret passages usually aren't sealed airtight. How could you use that to detect their presence?
2 of 8: In many adventure movies, the hero uses a cigarette lighter or lit match to detect the presence of a breeze.
3 of 8: Check your inventory to see that you have a book of matches.
4 of 8: You can use the book of matches on a hotspot to see whether or not there's any air flow near it.
5 of 8: Start by checking the hotspots in the library.
6 of 8: You'll find that using the matches on the columns over to the left will cause the flame to flicker.
7 of 8: Click on the columns to reveal a keyhole, then click again to get a close-up of it.
8 of 8: Examine the strangely shaped keyhole to notice that it requires a cogwheel-shaped key.
