Variation on a theme

Sara Woods' 1973 mystery novel Yet She Must Die offers a different
version of the fiction authors' standard disclaimer, which perhaps
says more than the author intended:

Any work of fiction whose characters were of a uniform excellence would rightly be condemned -- by that fact if by no other -- as being incredibly dull. Therefore no excuse can be considered necessary for the villainy or folly of the people in this book. It seems extremely unlikely that any one of them should resemble a real person alive or dead. Any such resemblance is completely unintentional and without malice.