A welcome return to the world of Thursday Next, this one related - in a further spiral down Fforde's metafictional rabbit hole - by 'the written Thursday Next'...that is, the character who plays Thursday in the series of five books (one, two, three and four, five) featuring the 'real' Thursday, Jurisfiction agent extraordinaire, over the course of which it transpires that the real Thursday has gone missing (or has she?), dragging the written Thursday into an investigation of her own through both the shifting genres of BookWorld and the confusing RealWorld.