Dresan Keep is a ruin in the region of Glenumbra. It's an old ruin and infested with Bloodthorn cultists. A passage down the old well leads to an underground area with library which is looked after by a Keeper of Knowledge.
The spirit of Richard Dusant appeared before the Vestige by the bridge leading to Dresan Keep. He died searching for the hidden treasure of the Keep and he wants help to finish the search for the Keep's ancient secrets.