The third story does relate a mystery, a genre incidentally ushered into literature by Poe. This story offers the readers suspects and mostly plays fair. The neat twist on "The Tell-Tell Heart" just about keeps the story in Mystery Inc. monster unmasking territory, and there just may be lesbian subtext in the tale to give it a little mature boost. Robert Pope and Scott McRae depict the characters marvelously and with outstanding style that never the less adheres to the models. The clear conveyance of the clues benefits the story immensely, and it's interesting that Peterson takes a Poe story that wasn't a mystery but cleverly turns the basis of its plot for a really solid modern day detective story.
Despite there being only one story that behaves like a bona fide mystery, this issue of Scooby Doo is a fantastic if confusing celebration of Edgar Allan Poe. Poe had nothing to do with Valentine's Day, and I question the decision to give the issue two themes instead of sticking with the stronger one.