Nick Bantock’s Griffin & Sabine books have always used the page itself as the trick: envelopes glued into the spine hold actual letters you pull out and unfold, so reading the story means physically handling someone else’s mail. The Pharos Gate is the seventh and final volume, published by Chronicle Books in 2016 alongside a 25th-anniversary edition of the original, finally resolving whether the two lovers ever meet in person. The mechanism is the whole point — it doesn’t survive translation to a screen.