Tower of the Missing Mage

From the introduction: OTHERWORLDLY WARLOCKS MODULE: OWL009 For use with any RPG Rule System INTRODUCTION The Wizard Ziamax is missing. His Friend the King has sent you to his Tower to check up on him. He has sent you with a Key to the Front Door, the Kings Seal, and 3 Spell Scrolls that might be Useful: Detect Magic, Freeze, and Dispel Magic.