To start the quest, speak to Oublek in Nashkel, outside the Temple of Helm.(2805.1654)
Speak to him and he will think you are the bounty hunter Greywolf, and offer you payment for a bounty.
If you accept you will gain 200 
, and complete the quest Payment Denied.
Note: If you do this quest you can still complete Prism the Sculptor, but Oublek will not offer you the slightly increased bounty (300 gp).