Goodreads asked P. Michael Henninger:

Where did you get the idea for your most recent book?

P. Michael Henninger The Warner Bros. film "Casablanca" provided the idea for my latest work, "Occam's Razor". It is the final chapter of a story that began with an updated, somewhat different version of the movie's story, called "Return From Casablanca". The film is arguably my favorite, and I always wondered what happened to Victor and Ilsa, Rick and Louie after they disappeared into the fog at the end. The second book, "Crisis of Conscience" and "Occam's Razor" are my attempts to answer that question.

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