The Matter of Britain

After Rome withdraws and the high king dies heirless, Britain splinters — until the enchanter Merlin sets a sword in a stone, and a boy raised as a nobody draws it out because his brother asked him to. Kingship, the legend’s first lesson runs, is not seized but revealed. Arthur wins his wars and builds the one thing Britain never had: the Round Table, where no seat is above another and honour is a thing you do, not a place you hold.

For one generation it works. But the ruin is set at the height of the glory: Lancelot, the greatest knight, and Guinevere, the queen, fall into a love that no oath can outlaw — and, older and worse, Arthur has already begotten a son in ignorance on his own half-sister, prophesied from birth as his destroyer. He tries to drown the infant; you cannot drown a prophecy.

The Holy Grail passes through the hall, and the fellowship rides out after heaven — which sorts them as Camelot never did: the sinless Galahad achieves the vision and asks to die, while the strongest are barred, and many never return. Then the affair is dragged into the light, and love, loyalty and law tear the Round Table three ways; the oath-brothers kill one another while the throne sits unguarded.

Mordred seizes the empty throne, and father and son meet at Camlann, where each deals the other a death-blow — the doom the king made before he knew he was making it. Excalibur is thrown back to the Lady of the Lake, a barge of queens bears the wounded king across the water, and the legend does the thing no other fall in the archive dares: it refuses to close the grave. Arthur is not dead, it insists, but healing in Avalon — the once and future king, who will come again.