« Dog Wizard » Barbara Hambly

Joanna Sheraton is in love with a wizard. Once an ordinary Californian computer programmer, her life was upended when she was first taken across the Void to a world of magic, where an evil mage threatened to destroy that world and ours.

With the help of Antryg, a brilliant wizard who quickly stole her heart, she learned to navigate that strange other land and saved the universe from destruction.

When the sinister king sentenced Joanna and her lover to death, they fled back to Earth, to live quietly under the California sun. But their troubles have followed them. A stranger dressed in wizard’s garb kidnaps Joanna, and Antryg gives pursuit back across the Void. What he finds is a world once again in peril, and he must give aid to the Wizard’s Council that condemned him if he is ever to see his love again.