Haunting used book stores lead to the ultimate temptation and a duplication in order to fill a missing spot in my Darkover collection.  Having found The Spell Sword on its own as a used copy, I discovered the 2002 Daw Omnibus Edition called The Forbidden Circle just a few weeks later, containing both The Spell Sword from 1974 and The Forbidden Tower from 1977 reprinted in one edition.  I broke down and decided that I would rather end up with two versions of The Spell Sword for now rather than miss out on reading one of the missing stories.

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