Needless secret keeping shoots book in the foot

In a recent review, I talked about how fictional secrets ought, if possible, to be kept rationally and meaningfully, but that often this isn’t the case. The ‘but’ you might be hoping for won’t come. Because King of Ashes is another book that makes a pointlessly kept secret vital to its plot, only in this instance the two plot twists that depend upon it are both fairly predictable, so Cosby