Run north through Alterac Mountains, then go through Strahnbrad and the valley with the Syndicate and lions. You'll come to a farmhouse near the shore of the lake. The Syndicate mobs here are 39-40 and tend to be stealthed. There are two right outside the door, and you will probably need to fight both at once.

Once the door is cleared, be ready to fight two more at the same time right inside the door. It's best to pull them outside so you don't aggro the other mobs in the house. Once you dispatch those, you'll have to deal with Nagaz, a level 40 orc. Once he's down, there should be one more stealthed mob near the stairs to deal with. Upstairs, there is one stealthed mob and one regular mob. You will have to deal with both at the same time. Pull them downstairs so you don't accidentally aggro Lord Perenolde.

Once you've finished them off, charge Perenolde. He has bubbles and heals and he's not shy about using them. He also has a sleep spell, so if you are in a group, expect to be down one person until sleep breaks every so often. He is level 41, but not elite. Once you get his health low, he will attempt to flee. Once he's dead, talk to the girl in the bedroom to finish the quest.