Fathis Aren-Thieves Guild Quest. (Spoilers)

[unregisturd]

I'm doing the Arrow of Extrication quest, and I went into Castle Bravil, and since I've already done the quest, I did it rather quickly. I got into Fathis' room via Invisibility Potion, searched the chests, then went behind the secret movable pillar. I went into the Wizard's Grotto, also whilst invisible, killed the Dremora Churl without him seeing me, then picked the locks to the gates. Then I explored the tunnels and what not and killed the two Conjurers, got to the locked door, and went down underwater and killed the Great Slautherfish or whatever, aand.. I found the underwater entrance. I explored everywhere, and the only way I can go is through the locked door. Now, from what I remember from going through it last time.. Shouldn't Fathis arrive at some point? And he's the only one with the key to get through that door, right? Well.. I can't find him. I've tried going into his room at night AND during the day and at all times, and in the tunnels, too, and I can't find him. Does anyone know where he hangs out or anything? I tried asking the characters in the game, and they all say the same thing, which is no help at all.

Edit: Ok, I did a search (which did nothing to help except jog my memory). I remember you somehow end up in a fort--don't remember what it's called--and that's where you find Aren. But aren't I supposed to be able to get to the fort through the Wizard's Grotto? And how can I get through that door if Aren has the key?

[unregisturd]

Nevermind! Urr! I swear, I ran through/swam through those tunnels for at least 30 minutes. I searched them thoroughly. AND I looked on my map for this one passageway (the passageway that I eventually needed) that's underwater, and I could NOT find it, though I was EXACTLY where it was on the map. I eventually gave up and thought the map was referring to a different underwater passageway (which was in the near vicinity). This is all hard to explain in type, but all you really need to know is I found the passageway I needed. It was VERY frustrating, though! I hate looking for underwater doorways. -_-

[bmusic721]

Dude, I know exactly what you are talking about. I was trying to find the entrance for like half an hour before it just appeared randomly right before my eyes!!!

[Loki[D.d.G]]

There are pretty similar threads to this one which already exist. Here's an [url="http://www.gamebanshee.com/forums/the-elder-scrolls-iv-oblivion-81/the-arrow-of-extrication-again-93854.html"]example.[/url]