What is it about Halloween?

For those of you who only know me as a novelist, you might be interested to know that my first real job was writing and drawing a daily comic strip. My strip was called Downstown, and it was syndicated by the same people that also represented Doonesbury, Cathy, The Far Side, and Calvin & Hobbes (I love to drop those names because it makes my strip sound more famous than it was). What, you've never heard of Downstown? Well, that might be because I retired the strip before some of you were...