The Turn of the Screw
Henry James's governess, and what she may or may not have seen.
84 cryptograms drawn from it, every one by Henry James.
How hard they are
27 easy, 35 medium and 22 hard, graded by the model described in our guide to solving cryptograms.
They average 71 letters over 19.1 distinct ones, with 4.3 letters appearing exactly once.
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