The Great Detective

Requirements

 * Your Stronghold's Guild Hall Must be rank 15 or higher to receive this quest.

Steps

 * Go to Sage Bradda's Shop in Protector's Encave
 * Speak to Sage Bradda about the Thayan Book
 * Investigate the Thayan Book
 * Speak to Zulia
 * Tell the Steward about Zulia's Plan

Dialogue

 * Sage Bradda, I hear you have a book on Thayan Wizards.