The Rainbow Abyss: Barbara Hambly

Book I of Sun-Cross. Jaldis and Rhion make a scant living - like most freelance wizards in a hostile universe - from luck-spells, love potions and fortune-telling. Love and magic can be lethal when combined - as Rhion discovers when he sells a love-potion to the wrong woman. Then the wizards are running for their lives, leaving a rare and dangerous spell unfinished. Years pass before Jaldis can repeat the spell: to open a Dark Well across the Void. From the well he hears a voice crying for help: magic in their world is being destroyed - and they need a wizard to save them. Cover art by Stephen Bradbury.