I just wanted to post some information about the quest chain on obtaining the key to the Arcatraz wing of Tempest Keep.  The name of the final quest is How to Break Into the Arcatraz.  I'm not sure if this makes any difference or not, but I'm allied with Scryer and was neutral with The Consortium at the time I did this chain.

I did read where the quest chain starts with Assisting the Consortium obtained from Anchorite Karja in Area 52, Netherstorm.  However, this NPC had no quest for me.  I'm guessing that this might be where you start the chain if you are Aldor?  I'm not sure.  Barring that possibility I found the following information, copied from [url=http://wow.allakhazam.com/db/item.html?witem=31084]Allakhazam[/url], to be very useful.

Key to the Arcatraz 
This is the quest chain to getting the Arcatraz key. We assume that this chain starts off with a minimum of friendly rep with the Consortium. 

Nexus-Stalker Khay’ji at Area 52: 
[Step 1] Consortium Crystal Collection (53,23) 
[Step 2] A Heap of Ethereals (28,79 / 29,79) 
[Step 3] Warp-Raider Nesaad (28,79) 
[Step 4] Request for Assistance (32,64) 

Gahruj at Eco-Dome Midrealm: 
[Step 5] Rightful Repossession (46,56) 
[Step 6] An Audience with the Prince 
[Step 7] Triangulation Point One (66,33) – Make sure to use the [Triangulation Device] 
[Step 8] Triangulation Point Two (29, 40) – Make sure to use the [Triangulation Device] 
[Step 9] Full Triangle (Group) (53, 21) 
[Step 10] Special Delivery to Shattrath (54,45) 

A’dal at Shattrath City 
[Step 11] How to Break Into the Arcatraz 
This quest requires both the &quot;Top Shard of the Arcatraz Key&quot; from Tempest Keep: The Mechanar the first wing and &quot;Bottom Shard of the Arcatraz Key&quot; from Tempest Keep: Botanica the second wing. End result is the &quot;Key to the Arcatraz.&quot;