The Spells of Caer Colur is the seventeenth chapter of The Castle of Llyr. Here in a confrontation with all the major protagonists the villainess reveals her plans, with the theme of unfortunate magical enchantments coming to a head, as does the minor theme of the bumbling accident.
PlotAchren revealed to the Companions that Princess Eilonwy was under her spell. The enchantress demonstrated Eilonwy's power by torturing Gurgi, while Gwydion faced Achren defiantly as ever. enchanted items which Achren needed to fulfill her plan: the Book of Llyr and the Golden Pelydryn.
|The Castle of Llyr|
|1. Prince Rhun | 2. Dinas Rhydnant | 3. The Shoemaker | 4. Shadows | 5. The Oath | 6. The Potions of Glew | 7. The Lair of Llyan | 8. The Harp of Fflewddur | 9. The Luck of Rhun | 10. The Cavern | 11. King of the Stones | 12. The Tomb | 13. The Ladder | 14. The Empty Book | 15. The Island | 16. A Meeting of Strangers | 17. The Spells of Caer Colur | 18. The Golden Pelydryn | 19. The Flood | 20. The Pledge|