Murder with a Twist is a bronze quest in Fable: The Lost Chapters. You’ll find a trio of guards behind a house in Oakvale where you met Orwin Gown as a boy. One of the guards will offer you 1000 gold coins to kill the assassin who killed his brother. The assassin can be found in Twinblade's Tent. However, when you talk to the assassin, you’ll learn that he's the guard’s brother, and that the guard wants him dead so that he can improve his inheritance. Then when you draw your weapon, he’ll realize that his brother sent you, and he’ll offer you 2000 gold to kill him instead. If you refuse, he’ll up his offer to 2500 gold.