The Batman & Scooby-Doo! Mysteries #7
The Scarecrow's new fear toxin has Gotham City too frightened to function! Batman and Mystery Inc. are able to put off the inevitable for a while as they investigate, but soon they fall victim as well--except for Shaggy and Scooby-Doo, who seem weirdly immune. It turns out that always being scared has some advantages, after all!
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