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"A children's book about a man who dresses up as a superhero named Kangaroo Man or something similar. He had a sidekick who was a former midshipman, and he was named something like Wombat boy. They wore jumpers with KM and WB on the front and Kangaroo man played a piano make that was named Kemble Minx or something like that. They went about trying to solve crimes but were not very good at it. It was either set in Australia or New Zealand. I think it was Australia."