Deathstalkers in Shadowfang

Objectives
Find the Deathstalker Adamant and Deathstalker Vincent.

Description
In preparation for an assault on Shadowfang, two deathstalkers were sent to the keep to gather intelligence. It has been many days and they have not returned, but we must receive their report if we're to have any hope of a successful attack!

So here is your task,. Go to Shadowfang Keep to the south and find the Deathstalkers Adamant and Vincent. Find them, and if they require aid then give it.

This mission is as dangerous as is it critical,. Do not fail.

Rewards
You will receive:
 * Ghostly Mantle
 * 2,000 XP
 * +100 or +500 reputation with Undercity
 * +100 or +500 reputation with Undercity

Completion
Vincent's body lies broken, and still.

Although Deathstalker Adamant will send his report to Hadrec... whatever additional details Vincent gained must remain with him.

But clutched in his hand is a small trinket...