- Talk to Tywin Lannister in King's Landing (in the castle). He will ask you to help Tyrion. He resides in the Hand's Tower, here in King's Landing. You must be a vassal or mercenary of the Westerlands to start this quest, no option will be given if you are not.
- Talk to Tyrion, he'll tell you about a rogue lord Sir Jeffory Darke who's been spreading vile rumors about King Joffrey's origin. Tyrion will ask you to kill Sir Darke in his own castle, Brookwater Keep.
- Go to Brookwater Keep, which is located to he north of the King's Landing, near Antlers. There, you will need to defeat lord Darke himself, his wife, soldiers and servants, ~10 foes total. If you are having troubles, you can hire some high-level mercenaries in taverns which will make short work of Darke's men, then disband them afterwards.
- Return to Tyrion and collect your reward. The next quest in this line is The King's Attention.
- Quest not removed but Bronn changed location********
Step 1: Talk to Bronn in King's Landing, Inside castle, straight ahead. He will tell you to find Tyrion in the Tower of the hand
Step 2: Talk to Tyrion who is in the upstairs part of King's Landing's tavern. He gives you the mission to assassinate the traitor Ser Jeffory Darke at Brookwater Keep.
Step 3: Head to Brookwater Keep which is just west of Duskendale.
Step 4: As you walk up to Brookwater Keep the troops stationed there will attack you. You will have to beat 6 or 7 decently armored troops and a peasant or two by yourself.
Step 5: After assassinating Ser Jeffory Darke, talk to his uncle, Sir Rike Darke, in Brookwater Keep.
Step 6: Return to Tyrion and collect your reward.