Temple of the Sun — Moyra Caldecott

The Temple of the Sun is the second book of the "Guardians of the Tall Stones" series. It continues the story of Kyra's hazardous journey undertaken with Karne and Fern to the Sacred Temple, where Kyra is to receive her training as a priestess and renew her love for the Lord Khu-ren. But a malevolent spirit still opposes them. Wardyke has returned, and his influence has already permeated the sanctity of the Temple. Kyra is forced once again to face the evil Magician-Priest, whose thirst for revenge and power threatens the balance between good and evil...