Aran Linvail

Aran Linvail is major character in biowares Baldur's gate 2: Shadows of Amn. He is the head guild master of the shadow thieves. Renal Bloodscalp is for tourists.

Spoilers
When you first go to a different area after the promenade, you are approached by a Gaelen Bayle. He says that the shadow thieves have a proposal to the protagonist to rescue Imoen. You fist need to get 20000 gold in order to do so.

After collecting the 20000 gold, he gives you a key to enter the real lair of the shadoww thieves. Its a big place with training rooms, chambers ant other stuff. In a fancy room, you approach Aran linvail who says that he can help to find Irenicus and Imoen, but first you must do some jobs for then,