Collect the fee for Gaelan Bayle

Collect the fee for Gaelan Bayle  is a main quest which can be started in Baldur's Gate II Chapter 2 the first time the party enters Athkatla Slums.

Walktrough
The first time the party leaves Waukeen's Promenade, a cinematic will start showing Jon Irenicus and Imoen being brought to Spellhold. Then Chapter 2 immediately starts. In the Slums the party will be greeted by Gaelan Bayle, a Shadow Thief who will claim to know the way to Spellhold and offer to help Gorion's Ward find it, if he follows him to his home.

In the privacy of his house, Gaelan will name the price for the Shadow Thieves help - 20,000. He will also suggest a job that will bring the party closer to that goal, dependent on Gorion's Ward's class. Gaelan's nephew, Brus will then await the party in front of the house to give them further directions on how to start the quest. Brus will then lead the party either to the Copper Coronet, or to the exit point of the Slums.

Once the party has gathered at least 15,000 a vampire named Valen will appear and arrange a meeting with the leader  of Athkatla's vampires. The vampires will offer to arrange the trip to Spellhold at a lower price - just 15,000.

At this point the player will have to choose sides. If the initial proposal of Bodhi is refused, Brus will appear and claim that Gaelan Bayle has news for the party. The next time the party sees Gaelan, he will also lower the price to 15,000. If the party sides with the Shadow thieves, it will gain 36,750 XP per party member as soon as it pays Gaelan.

Consequences
Choosing to side with the Shadow Thieves will make the vampires hostile towards the players. This will eliminate all chances to work for Bodhi.