Meet Petticoat Katie, an irrepressible flirt with a nifty set of crochet-hooks and a penchant for peppermint creams. And her substantial housemate Sledgehammer Girl, a woman who knows where her hammer is - and how to use it. Join the pair for some exceedingly silly adventures as they encounter missing lake monsters, stolen mermaids and strange weather balloons in the course of their Fortean investigations. Oh, and a hundred monkeys.