We know about your foray into the Bonehoard some months ago. The High Priest has chosen to overlook this. However, during your excursion, you found two special stones: The Mystic's Soul and The Mystic's Heart.
Little did you realize the consequence. A rogue mage has acquired them and entered the Mystic's abandoned keep in the hopes of learning darker magics.
Retrieve these stones for us, Mr. Garrett. If you do not, we will respond in the language we know so well.'