Defias Brotherhood quest chain

In the Defias Brotherhood quest chain, Gryan Stoutmantle wants you to help him put the gang known as the Defias Brotherhood out of business.

The Defias Brotherhood
Gryan Stoutmantle knows someone who knows someone. He did a favor for this guy, Wiley the Black, and figures to cash in by having you find out more about the Defias Brotherhood from him.
 * The Defias Brotherhood (quest)

So, you set off to Lakeshire, in Redridge Mountains.


 * The Defias Brotherhood (2)

It's risky for him, but he does owe Gryan a favor. Wiley pens a note for Gryan and asks you to return it to him.

Back at Sentinel Hill, Gryan reads a reference to the Stonemasons. Gryan doesn't know anything about it, but he does know someone who might. He asks you to take the note to Master Mathias Shaw, at 7 in Stormwind's Old Town district.
 * The Defias Brotherhood (3)

Master Shaw is able to fill in a few blanks about the Stonemasons. He writes up a report for Gryan, and asks you to take it back to him.
 * The Defias Brotherhood (4)

Edwin VanCleef had been leader of the Stonemasons who rebuilt Stormwind.
 * The Defias Brotherhood (5)

Gryan doesn't want to believe that VanCleef is the power behind the Defias on just this little bit of evidence.

For now, he asks you to help track down the entrance to the Defias hideout. His scouts reported a messenger whose mail bag would provide important information. Gryan asks you to waylay the messenger and bring back whatever messages you can find.

Gryan decodes the messages, and determines that VanCleef is indeed the leader of the Defias. Gryan's people have captured a member of the Defias gang that is willing to sell out the rest of the gang to save his life. All you have to do is... make sure he stays alive long enough to show you where the hideout is.
 * The Defias Brotherhood (6)

The traitor leads you through Moonbrook to the mines on the south side of town. You have to ward off pretty much the whole town, but you get there, nonetheless. Having done his part, he fades off into the underbrush, while you return to Stoutmantle.

While it saddens him to do it, Gryan must ask that Edwin VanCleef be assassinated for the greater good of Westfall.
 * The Defias Brotherhood (7)

After many battles, you confront VanCleef on his ship within the Deadmines, and survive. While picking up his head as proof of your deed, you find An Unsent Letter that looks interesting. But that is for another day.

You return to Gryan at Sentinel Hill, and present him your grisly trophy. He salutes you, and thanks you for your service to Westfall.

Rewards
The final quest allows you to choose one of the following rewards:

Along the way you'll also garner a fair amount of reputation with Stormwind.