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|summary=A satisfying conclusion to a fantasy series that has been a pleasure to read.

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It was hard to believe, after the shocking ending to ''The Traitor's Gate'', that things could get any worse for Fin and his allies, but conflict, death and destruction form the backbone of ''The London Stone''. The first two chapters set the desolate tone that pervades a significant proportion of the novel, with a surprise Ageing, and a brutal description of the drowning at Traitor's Gate. Christopher survives only by the virtue of the binding magic of the sacrifice he made with the Magi in the first book. Fin and Christopher soon find themselves isolated from each other by the roles that they have to play in the conflict, a conflict that Joe, manipulated by Arnold Mather, is on the wrong side of. Tension rises relentlessly as Arnold Mather's grip on Nowhere tightens, and his corruptive influence creates the threat of total annihilation of all the inter-connected worlds. It is up to Christopher to hold down the fort against his father, while Fin, along with the dwindling remains of the Knights of Nowhere, gathers the aid of the exiled Magi in a desperate attempt to turn the tide.