Free Haer'Dalis from Imprisonment by Mekrath

Mekrath's laboratory; 21250 ex, 1000 gold
 * Free Haer'Dalis from Inprisonment by Mekrath
 * Go into the basement of the Five Flagons Inn in the Bridge District and watch the pitiful performance of the Sigil troupe. Afterwards, Raelis Shai will ask if there any adventurers who'd be willing to help them.
 * Go backstage and speak to Raelis Shai. Agree to find Haer'Dalis and the gem for her.
 * Enter the sewers from the Temple District. Behind a secret wall in the northwest part of the area you will find an entrance into Mekrath's Laboratory.
 * In one of the rooms, you will find Haer'Dalis, but he is being mind-controlled and claims that Mekrath is his master.
 * Defeat Mekrath to break the spell on Haer'Dalis. Mekrath is a powerful wizard, though, so be very cautious and patient.
 * Once Haer'Dalis is free he will offer to join your party. You can either let him in your party or meet him back at the Five Flagons. Take the Portal Gem from the alter.
 * Return to Raelis Shai in the Five Flagons Inn in the Bridge District with the Portal Gem. She will give you a reward and will reveal who they really are.