There's a drought of crop circles across England. The British summer, not normally known for its endurance, refuses to end, and the prospect of Christmas on the beach is drawing closer with each monotonous sunny day. Petticoat Katie - Fortean investigator and shameless flirt - packs her bag and heads for the seaside with Sledgehammer Girl (and her trusty Derringer). So how do they end up held to ransom by a shotgun-toting inventor with a grudge in the depths of Savernake Forest? With only a set of crochet-hooks to save the day? That sort of thing can really spoil a Bank Holiday.