Jumper cable

de Piers Anthony

In the thirty-third thrilling escapade in Piers Anthony's rousing Xanth fantasy series, an adventurous arachnid named Jumper must assume human form to save the enchanted realm from a cosmic peril involving a cataclysmic battle between two all-powerful Demons, a cryptic prophecy, alluring damsels, and a seductive siren and her demonic consort.